Digital Commons Network^™

A Predictive Modeling Approach For Improving Paddy Crop Productivity Using Data Mining Techniques, Anitha Arumugam

Turkish Journal of Electrical Engineering and Computer Sciences

Agriculture has a great impact on the economy of developing countries. To provide food security for people, there is a need for improving the productivity of major crops. Rapidly changing climatic conditions and the cost of investment in agriculture are major barriers for small-holder farmers. The proposed research aims to develop a predictive model that provides a cultivation plan for farmers to get high yield of paddy crops using data mining techniques. Unlike statistical approaches, data mining techniques extract hidden knowledge through data analysis. The data set used in this research for mining process is real data collected from farmers …

Frost: Frequently Asked Questions, Department Of Primary Industries And Regional Development, Western Australia

Grain and other field crops published reports

Frequently asked questions regarding frost from the National Frost Initiative.

Assessing Patient And Caregiver Intent To Use Mobile Device Videoconferencing For Remote Mechanically-Ventilated Patient Management, Brian R. Smith

Master's Theses and Doctoral Dissertations

The Michigan Medicine adult Assisted Ventilation Clinic (AVC) supports patients with neuromuscular disorders and spinal cord injuries and their caregivers at home, helping them avoid expensive emergency department visits, hospitalization, and unnecessary or excessive treatments. Mobile device videoconferencing provides an effective capability for remote mechanically-ventilated patient management but must rely upon an unknown infrastructure comprising patient and caregiver mobile device ownership, connectivity, and experience—and intent to use the service if provided. The purpose of this study was to measure the extent of this infrastructure and the perceived ease of use, perceived usefulness, and intent to use this mobile device …

A New Method For Ultra-Low Sulfate Extraction And A Pilot Study In Arid Soils, Marisela Montelongo

Open Access Theses & Dissertations

Sulfur in soils is a crucial nutrient for all organisms including plants. Sulfate (SO42-), a water soluable anion, is a good source of this important element. Because of the importance of sulfur for agriculture, the use of sulfate has been well studied in temperate climate zones, and it is generally accepted that microbes play a critical role in controlling the availability of sulfate. Organically bound sulfur, such as sulfate esters and carbon-bonded sulfur, compounds that are generated and decomposed by microbes, are essential sulfur sources for plants under these conditions. For arid environments, knowledge of sulfate turnover in soils by …

Exposure Of Commercial Titanium Dioxide And Copper Hydroxide Nanomaterials On Basil (Ocimum Basilicum): A Life Cycle And Transgenerational Study, Wenjuan Tan

Open Access Theses & Dissertations

Although thousands of reports have shown that engineered nanomaterials (ENMs) can alter several agronomical, physiological, and biochemical parameters in plant and mammal systems, the effects of long-term exposure and varietal responses are scarce. Titanium dioxide nanoparticles (nano-TiO2) and copper hydroxide nanoparticles [nano-Cu(OH)2], which are widely used in agriculture, medicine, food industry, textile, among other areas, are among the ENMs with high production and consumption globally. Though reports indicate that these ENMs affected plant development and metabolism, their interactions with basil (Ocimum basilicum) are unknown. Basil is a popular culinary herb worldwide, featured in Asian and European cuisine and has more …

The Potential Of Atmospheric Air Cold Plasma For Control Of Bacterial Contaminants Relevant To Cereal Grain Production, Agata Los, Dana Ziuzina, Daniela Boehm, Patrick J. Cullen, Paula Bourke

Articles

The aim of this work was to investigate the efficacy of dielectric barrier discharge atmospheric cold plasma (DBD ACP) against bacteria associated with grains quality and safety. ACP inactivation efficacy was tested against biofilms formed by different strains of E. coli, Bacillus and Lactobacillus in grain model media and against B. atrophaeus endospores either in grain media or attached on abiotic surfaces. Effects were dependent on bacterial strain, media composition and mode of ACP exposure. ACP treatment for 5min reduced E. coli spp., B. subtilis and Lactobacillus spp. biofilms by >3 log10, whereas insignificant reductions were achieved for B. atrophaeus. …

Application Of Headspace-Gas Chromatography-Mass Spectrometry For Characterization Of Volatile Compounds In Chicken Eggs, Hanan Jehma

Chulalongkorn University Theses and Dissertations (Chula ETD)

Volatile compounds in chicken eggs under the cold chain system and non-cold chain system were characterized by headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) combined with chemometrics. According to a central composite design, the following optimum HS-SPME extraction conditions were obtained: extraction temperature of 65 oC, extraction time of 45 min and the amount of NaCl of 0.4 g. In comparison of their mass spectrum and linear retention index from HS-SPME-GC-MS analysis, major volatile compounds found in egg samples included toluene, hexanal, nonanal and other minor volatile compounds were heptanal, octanal, decanal, benzaldehyde, 1-octen-3-ol and 2-ethyl-1-hexanol, with the types and amounts …

Preparation Of Rigid Polyurethane Foams Catalyzed By Metal-Asparagine And Metal-Threonine Complexes, Nuttiya Jintana

Chulalongkorn University Theses and Dissertations (Chula ETD)

This research aimed to synthesize metal-amino acid complexes in the form of aqueous solutions to serve as new catalysts for the preparation of rigid polyurethane foams. Aqueous solutions of metal-amino acid complexes were prepared from the reaction of metal acetates with amino acids and water was used as a solvent. Metal acetates employed were copper acetate and zinc acetate. Amino acids employed were asparagine (Asn) and threonine (Thr). Both amino acids are odorless and non-toxic. UV-Vis spectroscopy, FTIR spectroscopy and mass spectrometry were used to characterize metal-amino acid complexes. Metal-amino acid complexes, namely Zn(Asn)₂, Zn(Thr)₂, Cu(Asn)₂ and Cu(Thr)₂ (where Asn …

Fluoride Encapsulation In Calcium Matrix, Piyada Dissara

Chulalongkorn University Theses and Dissertations (Chula ETD)

Fluoride ion (F-) is an important ingredient in a toothpaste. It protects caries by reacting with hydroxyapatite [Ca10(PO)4(OH)2] in tooth enamel to form insoluble fluorapatite [Ca10(PO)4(F)2]. Unfortunately, F- also easily interacts with calcium species in a toothpaste, and then it is deactivated. In this work, we focus on the encapsulation of F- in a shellac bead by using a simple extrusion method. To construct shellac beads, an aqueous solution of F- is injected into an ethanolic solution of shellac. The shellac beads are formed due to insolubility of shellac in water. Then, the beads are transferred into DI water for …

Ferrocene-Bearing Tea Polyphenol Particles As Anticancer Drug Carriers, Punnawich Phaiyarin

Chulalongkorn University Theses and Dissertations (Chula ETD)

Ferrocene is a redox moiety that can be positively charged upon being oxidized. Thus, it is possible to use this moiety to make a polymer platform that is redox responsive regarding their water solubility. Here we prepared polymerized EGCG nanoparticles (pEGCG) and polymerized EGCG gum (pEGCG-gum) from tea polyphenol EGCG. Ferrocene was grafted onto the polymerized tea polyphenol and the obtained polymers were allowed to self-assemble into water-insoluble and indispersible sub-micron particles. The water-insoluble ferrocene-bearing particles became water-dispersible particles with nanometer sizes upon being oxidized by hydrogen peroxide. The oxidized particles, Fc-pEG-gum can inhibit growth of HepG2 liver cancer cells …

Colorimetric Detection Of Cysteine Using Silver-Hydroxyapatite Nanoparticles, Retno Prasetia

Chulalongkorn University Theses and Dissertations (Chula ETD)

Cysteine is a sulphur-containing amino acid that acts as an effective antioxidant in human body. An excessive amount of cysteine leads to cystine formation that causes the stone formation in kidney, bladder, and ureters. A new method was developed for detection of cysteine in urine samples based on the aggregation of silver nanoparticles (AgNPs) on Hydroxyapatite (HAp) in the presence of cysteine. Transmission Electron Microscope (TEM) was used to observe the morphology of prepared HAp and AgNPs on HAp. The presence of cysteine of different concentrations resulted in different cluster sizes of AgNPs on HAp and hence different solid color. …

Colorimetric Determination Of Thiocyanate Ion Using Modified Polymer Resins, Sujinda Khaosaard

Chulalongkorn University Theses and Dissertations (Chula ETD)

A new method for thiocyanate determination in milk samples based on the formation of dithiocyanato dipyridine copper(II) [Cu(SCN)2(Py)2] complex on polymer resin surface is proposed. Amberlite XAD-7 resin on was modified with copper-pyridine complex and used as the material for detection. The color of resin changed from blue to green with the increase of thiocyanate concentration. It could be observed by naked-eye and the color intensity used as quantitative data was measured via Image-J software. The effect of various parameters was investigated including Cu2+ concentration, time for resin modification with reagents, sample volume, detection time and pyridine volume. Under the …

Characterization Of Non-Volatile Compounds In Tom Yum Soup Using High Performance Liquid Chromatography-Tandem Mass Spectrometry, Wanabud Wongbubpha

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this work, high performance liquid chromatography hyphenated with tandem mass spectrometry (HPLC-MS/MS) was developed and validated for simultaneous determination of 31 targeted non-volatile compounds, such as 2 organic acids, 20 amino acids and 9 phenolic acids, in Tom Yum ingredient, Tom Yum soup made from the fresh ingredients and commercial Tom Yum pastes, where the main Tom Yum ingredients include galangal, lemongrass, kaffir lime leaves, Bird's eye chili, lime juice and fish sauce. The following HPLC-MS/MS conditions were used: a PoroShell C18 column (4.6 x 100 mm, 2.7 µm) using a gradient elution of A:B mobile phase at a …

Metabolic Responses Of Aspergillus Niger Es4 To Ethanol Stress, Wimonsiri Kongchai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Aspergillus niger ES4 is a fungus isolated from the top wall of an ethanol tank of the PTT public company limited. Because normally, microorganism cannot tolerate high amount of ethanol, the growth of A. niger ES4 on the ethanol tank indicates the special properties of this fungal strain in response to ethanol. This research was therefore aimed at studying the effects of ethanol on the metabolites production of A. niger ES4 by using both untargeted and targeted metabolomics. When A. niger ES4 cultures were grown in minimal media containing 4% of ethanol for 3 days, A. niger ES4 responded to …

Discovery Of Relation Between Listeria And Other Bacterial Contamination Using Classification Refinement Technique, Napas Jeamchotpatanakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

People often use chicken to prepare their diary meal which creates a great demand for food producers and exporters in Thai food industry. Thailand is ranked fourth in chicken exporters in the world. Standards on chicken meat regulations differ from country to country. One commonality remains: controlling the bacteria that can affect human life, particularly pregnant women and the unborn. One of the important bacteria is called Listeria which receives high attention for the industry to prevent their contamination in chicken. A microbiological test is usually conducted to analyze the data from industry. However, the microbiological test is incapable of …

การเตรียมไคโตซาน/พอลิไวนิลแอลกอฮอล์ไฮโดรเจล, พริม ภักดีธรรม

Chulalongkorn University Theses and Dissertations (Chula ETD)

ไคโตซาน (CS) เป็นพอลิเมอร์ที่สามารถย่อยสลายทางชีวภาพซึ่งมีการตอบสนองที่ดีต่อระบบภูมิคุ้มกันร่างกายและมีฤทธิ์ต้านเชื้อจุลินทรีย์ การใช้ไคโตซานเพื่อขึ้นรูปเป็นแผ่นปิดแผลยังมีข้อจำกัดบางประการเนื่องจากความอ่อนแอของแผ่นฟิล์ม นอกจากนั้นแผ่นไคโตซานยังมีความยืดหยุ่นไม่มากพอและแตกหักได้ง่าย ดังนั้นจึงได้เตรียมแผ่นไคโตซานบนผ้าเพื่อเป็นวัสดุฐานรอง การเตรียมไฮโดรเจลผสมโดยใช้ไคโตซานผสมพอลิไวนิลแอลกอฮอล์ทั้งหมด 2% (w/v) ในสารละลายกรดอะซิติก 1% (v/v) ที่อัตราส่วน 0.75 ไคโตซาน ต่อ 0.25 พอลิไวนิลแอลกอฮอล์ เป็นอัตราส่วนที่มีประสิทธิภาพสูงสุดของไฮโดรเจลผสมที่สามารถกักเก็บน้ำได้ 89.12% ซึ่งมีขั้นตอนการเตรียมโดยนำสารละลายไฮโดรเจลไคโตซาน/พอลิไวนิลแอลกอฮอล์ผสม เทลงบนผ้าและอบแห้งที่อุณหภูมิ 40 องศาเซลเซียส เป็นเวลา 72 ชั่วโมง อัตราส่วนของส่วนผสมไคโต-ซาน/พอลิไวนิลแอลกอฮอล์ในการทดสอบคือตั้งแต่ 2:0 ถึง 0:2 เพื่อหาปริมาณน้ำที่เหมาะสม และเพื่อเพิ่มประสิทธิภาพในการต้านเชื้อจุลินทรีย์ จึงเติมน้ำมันหอมระเหยจากตะไคร้ (Cymbopogon citratus) เข้าไปปริมาณ 3.125% (v/v) ในขณะขึ้นรูปไฮโดรเจล จากการทดสอบแผ่นไฮโดรเจลผสมไคโตซาน/พอลิไวนิลแอลกอฮอล์ด้วยวิธีทดสอบ AATCC 100 (Antibacterial Finishes on Textile Materials: Assessment of) ผลจากการทดลองน้ำมันตะไคร้หอมระเหย สามารถเพิ่มประสิทธิการต้านเชื้อของไฮโดรเจลผสมไคโต-ซาน/พอลิไวนิลแอลกอฮอล์บนฐานรองซึ่งสามารถยับยั้ง S.aureus ได้จาก 6.16 ± 0.02 log CFU/ml เหลือ 0.00 หรือ 99.99% ใน 24 ชั่วโมง

การเตรียมแผ่นโปร่งแสงจากเซลลูโลสแอโรเจล, สาวิตรี สินธุ

Chulalongkorn University Theses and Dissertations (Chula ETD)

ในงานวิจัยนี้ได้ทำการศึกษาการเตรียมแผ่นเซลลูโลสโปร่งแสงจากเซลลูโลสแอโรเจลแบบเปียก ซึ่งเตรียมด้วยระบบโซเดียมไฮดรอกไซด์ยูเรีย ตามด้วยการแลกเปลี่ยนตัวทำละลายหลายๆรอบ โดยขั้นตอนแรกเริ่มด้วยการเตรียมสารละลายเซลลูโลสผักตบชวาหลังจากนั้นเทลงในแม่แบบพลาสติก สารละลายจะถูกทิ้งไว้จนกลายเป็นของแข็ง หลังจากนั้นทำการแลกเปลี่ยนตัวทำละลายด้วยน้ำเพื่อกำจัดโซเดียมไฮดรอกไซด์ยูเรียออกอย่างสมบูรณ์เพื่อที่จะได้แผ่นแอโรเจลแบบเปียกออกมา หลังจากนั้นทำการเติมพอลิเมอร์ที่มีค่าดัชนีการหักเหที่ใกล้เคียงกับเซลลูโลสลงไปในรูพรุนที่มีขนาด นาโน/ไมโครเมตร ซึ่งในงานวิจัยนี้จะใช้พอลิเมทิลเมทาคริเลท 2 ชนิด (Tg สูง และ Tg ต่ำ) ทำให้ได้แผ่นเซลลูโลสโปร่งแสงที่มีแสงส่องผ่านได้ร้อยละ 80-90 ตรงข้ามกับเซลลูโลสแอโรเจลที่มีการส่องผ่านของแสงต่ำ ประมาณร้อยละ 8.24 เท่านั้น หลังจากนั้นตรวจสอบค่าการนำความร้อน และค่าสัมประสิทธิ์การขยายตัวทางความร้อน พบว่าแผ่นโปร่งแสงที่เตรียมจากเรซินที่มีค่า Tg สูง จะมีค่าสัมประสิทธิ์การขยายตัวทางความร้อนต่ำกว่าเรซินทางการค้า (Tg ต่ำ) แสดงให้เห็นว่าอะคริลิกเรซินที่มีค่า Tg สูงจะสามารถต้านทานการเปลี่ยนแปลงรูปร่างได้ดีกว่า ผลสรุปว่า แผ่นเซลลูโลสโปร่งแสงที่เตรียมจากอะคริลิกเรซินที่มีค่า Tg สูง จะมีความสามารถในการต้านทานความร้อนสูงกว่าเตรียมจากอะคริลิกเรซินที่มีค่า Tg ต่ำ

Weighted Quantile Sum Regression For Analyzing Correlated Predictors Acting Through A Mediation Pathway On A Biological Outcome, Bhanu M. Evani

Theses and Dissertations

Abstract

Weighted Quantile Sum Regression for Analyzing Correlated Predictors Acting Through a Mediation Pathway on a Biological Outcome

By

Bhanu M. Evani, Ph.D.

A thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at Virginia Commonwealth University.

Virginia Commonwealth University, 2017.

Major Director: Robert A. Perera, Asst. Professor, Department of Biostatistics

This work examines mediated effects of a set of correlated predictors using the recently developed Weighted Quantile Sum (WQS) regression method. Traditionally, mediation analysis has been conducted using the multiple regression method, first proposed by Baron and Kenny (1986), which has since …

Plant–Insect Interactions In A Changing World, S. Pincebourde, J. Van Baaren, S. Rasmann, P. Rasmont, G. Rodet, B. Martinet, P. A. Calatayud

All Peer-Reviewed Publications

Global change is resetting the spatial and ecological equilibrium of complex co-evolutionary relationships between plants and their insect herbivores. We review the mechanisms at play in the responses of plant–insect interactions to global changes, including increased temperature and atmospheric CO2 concentrations, modification of land use and pollution. We distinguish between the direct effects of global changes on each partner from the indirect impacts on insects via the responses of plants. The indirect effects include a change in the nutritional quality of the plant tissues for herbivore insects, as well as a change in the microclimatic conditions at the leaf surface. …

A Poetics Of Food In The Bahamas: Intentional Journeys Through Food, Consciousness, And The Aesthetic Of Everyday Life, Hilary B. Booker

Antioch University Dissertations & Theses

This research explores intentional food practices and journeys of consciousness in a network of people in The Bahamas. Intentional food practices are defined as interactions with food chosen for particular purposes, while journeys of consciousness are cumulative successions of events that people associate with healing, restoration, and decolonization personally and collectively. This research examines (1) experiences and moments that influenced people’s intentional food practices; (2) food practices that people enact daily; and (3) how people’s intentional food practices connect to broader spiritual, philosophical, and ideological perspectives guiding their lives. The theoretical framework emerges from a specific lineage of theories and …

Wellness Education And Job-Related Injuries And Illnesses For Federal Employees, Eunice Scott

Walden Dissertations and Doctoral Studies

Work-related injuries and illnesses may lead to absenteeism, which affects the level of productivity. The purpose of this study was to determine the success of an employee workplace training program on work-related injury and illness rates at selected federal districts within a federal organization. Newman's model, which describes internal and external factors that may have an effect on an individual's health, was the framework that guided this project. A pre-post design was used to compare data from 2 publically available data sets, the Occupational Safety and Health Administration Illness and Injury and the Voice of the Employee Survey, for the …

Isocoumarins And 3,4-Dihydroisocoumarins, Amazing Natural Products: A Review, Aisha Saddiqa, Osman Çakmak, Muhammad Usman

Turkish Journal of Chemistry

The isocoumarins are naturally occurring lactones that constitute an important class of natural products exhibiting an array of biological activities. A wide variety of these lactones have been isolated from natural sources and, due to their remarkable bioactivities and structural diversity, great attention has been focused on their synthesis. This review article focuses on their structural diversity, biological applications, and commonly used synthetic modes.

Synthesis, In Vitro Dna Interactions, Cytotoxicities, Antioxidative Activities, And Topoisomerase Inhibition Potentials Of Mn(Ii), Co(Ii), Ni(Ii), Cu(Ii), And Zn(Ii) Complexes With Azo-Oxime Ligands, Melek Çol Ayvaz, İbrahi̇m Turan, Bayram Dural, Seli̇m Demi̇r, Kaan Karaoğlu, Yüksel Ali̇yazicioğlu, Keri̇m Serbest

Turkish Journal of Chemistry

Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) transition metal complexes of 2-hydroxy-5-[(E)-(4-phenyl) diazenyl] benzaldehyde oxime and 2-hydroxy-5-[(E)-(4-nitrophenyl) diazenyl] benzaldehyde oxime ligands were synthesized and characterized through NMR, IR, ESI mass, and UV analysis. DNA binding abilities of the complexes were revealed using a UV-Vis spectrophotometer with the absorption titration and competitive binding techniques. Hydrolytic and oxidative DNA cleavage activities under different conditions were also proved. Topoisomerase I inhibition efficiencies and in vitro free radical scavenging activities of all complexes were examined. Finally, the selective cytotoxic potentials of all complexes were evaluated in human colon cancer, normal colon, and fibroblast cell lines …

Effects Of Nonaerated Circulation Water Velocity On Nutrient Release From Aquaculture Pond Sediments, Xiangju Cheng, Dantong Zhu, Xixi Wang, Deguang Yu, Jun Xie

Civil & Environmental Engineering Faculty Publications

Sustaining good water quality in aquaculture ponds is vital. Without an aerator, the dissolved oxygen in ponds comes primarily from mass transfer at the water-ambient atmosphere interface. As sediment can seriously affect water quality, this study used indoor experiments to examine the nutrient (nitrogen and phosphorus) release mechanisms and fluxes from sediment in aquaculture ponds with moving water but no aeration. The results showed that the ammonia nitrogen (NH₃-N) concentration in the overlying water was inversely proportional to flow velocity and that a higher flow velocity tended to result in a lower concentration in the overlying water, a …

Eukaryotic Microbes, Principally Fungi And Labyrinthulomycetes, Dominate Biomass On Bathypelagic Marine Snow, Alexander B. Bochdansky, Melissa A. Clouse, Gerhard J. Herndl

OES Faculty Publications

In the bathypelagic realm of the ocean, the role of marine snow as a carbon and energy source for the deep-sea biota and as a potential hotspot of microbial diversity and activity has not received adequate attention. Here, we collected bathypelagic marine snow by gentle gravity filtration of sea water onto μm filters from similar to 1000 to 3900 m to investigate the relative distribution of eukaryotic microbes. Compared with sediment traps that select for fast-sinking particles, this method collects particles unbiased by settling velocity. While prokaryotes numerically exceeded eukaryotes on marine snow, eukaryotic microbes belonging to two very distant …

Antibiotics And Antibiotic-Resistant Bacteria In Coastal Plain Streams, Jason Duff

College of Graduate Studies: Theses & Dissertations

Streams across the United States and globally are influenced by environmental contamination, including antibiotics, which enter streams due to widespread use and multiple pathways into the environment. Antibiotics are also likely to enter streams in mixture with other contaminants that alter the effects on aquatic organisms. Furthermore, antibiotic-resistant bacteria enter streams through similar pathways as antibiotics with implications for natural microbial communities. Therefore, understanding the presence and effects of antibiotic-contaminant mixtures and antibiotic-resistant bacteria in streams is important for resource management.

Chapter one describes an experiment that tested the hypothesis that the antibiotic tetracycline (TC) alone influences phytoplankton communities differently …

Rapid Quantification Of Trypsin Inhibitors In Food And Feed Formulations With Electrospray Ionization Mass Spectrometry, Radheshyam Panta

Doctoral Dissertations

"Presence of anti- nutrients deteriorate the nutritional value of animal foods and feed formulations. The important one being trypsin inhibitors. Trypsin inhibitors in food and feed formulations lower the protein supplement and hence the ultimate consequence is the decrease in growth and development of animals. It is therefore, crucial to monitor trypsin inhibitors in animal food and feed formulations. Research work mentioned in this dissertation is based on the development of rapid, more accurate and robust method for determination of trypsin inhibitor in food and feed formulations. The developed method includes extraction of trypsin inhibitor from food and feed formulation …

Feasibility Of Laser-Induced Breakdown Spectroscopy (Libs) As An At-Line Validation Tool For Calcium Determination In Infant Formula, Xavier Cama-Moncunill, Maria Markiewicz-Keszycka, Yash Dixit, Raquel Cama-Moncunill, Maria Piedad Casado-Gavalda, Patrick J. Cullen, Carl Sullivan

Articles

In this study, a 150 mJ laser-induced breakdown spectroscopy (LIBS) system was assessed to determine calcium content in infant formula (IF) samples. LIBS is a promising emission spectroscopic technique for elemental analysis, which offers advantages over conventional methods such as real-time analyses, little to no sample preparation and ease of use. The aim of this work was to evaluate the feasibility of LIBS as an at-line tool for IF manufacturing. To this end, IF mixtures with varying content of calcium were prepared over a range (approx. 1.5–7 mg/g of calcium) selected to be in conformity with the guidelines provided by …

Linking Atr-Ftir And Raman Features To Phenolic Extractability And Other Attributes In Grape Skin, Hugh Byrne, Abigail Rooney, Julio Nogales-Bueno, Jose Miguel Hernandez-Hierro, Francisco Jose Heredia

Articles

The importance of wine phenolics on the sensory characteristic of red wines is well-known. Therefore, it is necessary to control the extractability of phenolic compounds from grape skins, which depends significantly on grape ripeness and hence, on cell wall degradation.

In the present study, attenuated total reflectance Fourier transform infrared (ATR-FTIR) and Raman spectra of grape skin have been recorded. Then, these spectral matrices have been studied and the main spectral features have been linked to extractabilities of phenolic compounds (anthocyanins, flavanols and total phenols). Moreover, spectral differences between external and internal grape skin surfaces also have been studied.

It …

Mcnair Journal: The 2017-2018 Cohort, Georgia Southern University Mcnair Scholars Program

Georgia Southern University McNair Scholars Journal (Archived)

Full issue of the Georgia Southern University McNair Journal presented by the Ronald E. McNair Post-Baccalaureate Achievement Program at Georgia Southern University.

This issue features the 2017-2018 cohort of McNair Scholars.

• Health Promotion Through Self-Management Among College Students Olamide Adebayo; Anunay Bhattacharya, DrPH(c); Marian M. Tabi, PhD
• Boring Sponges “Inhibition on Easter Oysters” health Conditions and Growth in Reference to the Tidal Height Johanna Dieudonne; John Carroll, PhD
• Synthesis of 1,2,3-Triazole Amino Acid Derivatives for Structure Activity Relationship Investigations Arneshia T. Henderson; Raven Richardson; Brandon Sellers; Ria Ramoutar PhD.; Karelle Aiken PhD.
• Detection of Saccharides Using Boronic Acid Derivatives Taylor …