Search Results - "Dumancas, Gerard G"

Chemometrics for Quantitative Determination of Terpenes Using Attenuated Total Reflectance–Fourier Transform Infrared Spectroscopy: A Pedagogical Laboratory Exercise for Undergraduate Instrumental Analysis Students by Dumancas, Gerard G., Carreto, Noemi, Generalao, Oliver, Ke, Guoyi, Bello, Ghalib, Lubguban, Arnold, Malaluan, Roberto

“…Chemometric techniques such as partial least-squares (PLS) regression have been applied with huge success to a wide array of chemical problems including…”
Get full text

Castor Oil: Properties, Uses, and Optimization of Processing Parameters in Commercial Production by Patel, Vinay R., Dumancas, Gerard G., Viswanath, Lakshmi C. Kasi, Maples, Randall, Subong, Bryan John J.

“…Castor oil, produced from castor beans, has long been considered to be of important commercial value primarily for the manufacturing of soaps, lubricants, and…”
Get full text

The Isorhamnetin-Containing Fraction of Philippine Honey Produced by the Stingless Bee Tetragonula biroi Is an Antibiotic against Multidrug-Resistant Staphylococcus aureus by Suarez, Angelica Faith L, Tirador, April Dawn G, Villorente, Zenith M, Bagarinao, Cathrina F, Sollesta, Jan Vincent N, Dumancas, Gerard G, Sun, Zhe, Zhan, Zhao Qi, Saludes, Jonel P, Dalisay, Doralyn S

“…Honey exhibits antibacterial and antioxidant activities that are ascribed to its diverse secondary metabolites. In the Philippines, the antibacterial and…”
Get full text

Production of Bio-Based Polyol from Coconut Fatty Acid Distillate (CFAD) and Crude Glycerol for Rigid Polyurethane Foam Applications by Salcedo, Ma Louella D, Omisol, Christine Joy M, Maputi, Anthony O, Estrada, Dave Joseph E, Aguinid, Blessy Joy M, Asequia, Dan Michael A, Erjeno, Daisy Jane D, Apostol, Glenn, Siy, Henry, Malaluan, Roberto M, Alguno, Arnold C, Dumancas, Gerard G, Lubguban, Arnold A

“…This study propounds a sustainable alternative to petroleum-based polyurethane (PU) foams, aiming to curtail this nonrenewable resource's continued and…”
Get full text

Using Near-Infrared Spectroscopy and Stacked Regression for the Simultaneous Determination of Fresh Cattle and Poultry Manure Chemical Properties by Cobbinah, Elizabeth, Generalao, Oliver, Lageshetty, Sathish Kumar, Adrianto, Indra, Singh, Seema, Dumancas, Gerard G

“…Excessive use of animal manure as fertilizers can lead to pollution through the introduction of nitrogen, phosphorus, and other mineral compounds to the…”
Get full text

Comprehensive Examination of Cu, Pb, Zn, Fe, Mn and Cd in Lackawanna County Waters, Northeastern Pennsylvania: A Brief Report by Dumancas, Gerard G., Butka, Jake R., Mehall, Adam M.

“…Lackawanna, a US county seat in Northeastern Pennsylvania has an estimated population of 216,000 in 2020. Over the years, it has been reported that several…”
Get full text

Producing polyglycerol polyester polyol for thermoplastic polyurethane application: A novel valorization of glycerol, a by-product of biodiesel production by Calderon, Mike Jhun P., Dumancas, Gerard G., Gutierrez, Carlo S., Lubguban, Alona A., Alguno, Arnold C., Malaluan, Roberto M., Lubguban, Arnold A.

“…The production of biodiesel generates glycerol as a by-product that needs valorization. Glycerol, when converted to polyglycerol, is a potential polyol for…”
Get full text

Development of High-Performance Coconut Oil-Based Rigid Polyurethane-Urea Foam: A Novel Sequential Amidation and Prepolymerization Process by Hipulan, Louell Nikki A., Dingcong, Roger G., Estrada, Dave Joseph E., Dumancas, Gerard G., Bondaug, John Christian S., Alguno, Arnold C., Bacosa, Hernando P., Malaluan, Roberto M., Lubguban, Arnold A.

“…The utilization of coconut diethanolamide (p-CDEA) as a substitute polyol for petroleum-based polyol in fully biobased rigid polyurethane-urea foam (RPUAF)…”
Get full text

Valorization of Agricultural Rice Straw as a Sustainable Feedstock for Rigid Polyurethane/Polyisocyanurate Foam Production by Dingcong, Roger G., Ahalajal, Mary Ann N., Mendija, Leanne Christie C., Ruda-Bayor, Rosal Jane G., Maravillas, Felrose P., Cavero, Applegen I., Cea, Evalyn Joy C., Pantaleon, Kaye Junelle M., Tejas, Kassandra Jayza Gift D., Limbaga, Edison A., Dumancas, Gerard G., Malaluan, Roberto M., Lubguban, Arnold A.

“…Agricultural rice straw (RS), often discarded as waste in farmlands, represents a vast and underutilized resource. This study explores the valorization of RS…”
Get full text

Influence of the Gold Nanoparticle Size on the Colorimetric Detection of Histamine by Rivera, Rolen Brian P., Unabia, Romnick B., Reazo, Renzo Luis D., Lapening, Melbagrace A., Lumod, Ryan M., Ruda, Archie G., Omping, Jahor L., Magdadaro, Miceh Rose D., Sayson, Noel Lito B., Latayada, Felmer S., Capangpangan, Rey Y., Dumancas, Gerard G., Malaluan, Roberto M., Lubguban, Arnold A., Petalcorin, Gaudencio C., Alguno, Arnold C.

“…Histamine is a well-known biogenic amine (BA) that is often associated with allergic reactions and is a significant cause of foodborne illnesses resulting from…”
Get full text

Facile Synthesis of Band Gap-Tunable Kappa-Carrageenan-Mediated C,S-Doped TiO2 Nanoparticles for Enhanced Dye Degradation by Erjeno, Daisy Jane D., Asequia, Dan Michael A., Osorio, Carlo Kurt F., Omisol, Christine Joy M., Etom, Andrei E., Hisona, Renzo Miguel R., Tilendo, Amierson C., Triana, Ann Pearl G., Dumancas, Gerard G., Zoleta, Joshua B., Alguno, Arnold C., Malaluan, Roberto M., Lubguban, Arnold A.

“…Semiconducting nanoparticles (SNPs) have garnered significant attention for their role in photocatalysis technology, offering a cost-effective and highly…”
Get full text

Comprehensive examination and comparison of machine learning techniques for the quantitative determination of adulterants in honey using Fourier infrared spectroscopy with attenuated total reflectance accessory by Dumancas, Gerard G., Ellis, Helena

“…[Display omitted] •Honey adulteration has both economic and organoleptic consequences.•Honey adulteration typically involves addition of various syrups in…”
Get full text

Current Developments in Machine Learning Techniques in Biological Data Mining by Dumancas, Gerard G, Adrianto, Indra, Bello, Ghalib, Dozmorov, Mikhail

“…This supplement is intended to focus on the use of machine learning techniques to generate meaningful information on biological data. This supplement under…”
Get full text

Development and Application of a Genetic Algorithm for Variable Optimization and Predictive Modeling of Five-Year Mortality Using Questionnaire Data by Adams, Lucas J., Bello, Ghalib, Dumancas, Gerard G.

“…The problem of selecting important variables for predictive modeling of a specific outcome of interest using questionnaire data has rarely been addressed in…”
Get full text

Development and Validation of a Clinical Risk-Assessment Tool Predictive of All-Cause Mortality by Bello, Ghalib A., Dumancas, Gerard G., Gennings, Chris

“…In clinical settings, the diagnosis of medical conditions is often aided by measurement of various serum biomarkers through the use of laboratory tests. These…”
Get full text

Development of a Direct Spectrophotometric and Chemometric Method for Determining Food Dye Concentrations by Arroz, Erin, Jordan, Michael, Dumancas, Gerard G.

“…An ultraviolet visible (UV-Vis) spectrophotometric and partial least squares (PLS) chemometric method was developed for the simultaneous determination of…”
Get full text

Synergistic effect of phytic acid and eggshell bio-fillers on the dual-phase fire-retardancy of intumescent coatings applied on cellulosic substrates by Tuble, Kent Andrew Q., Omisol, Christine Joy M., Abilay, Gerson Y., Tomon, Tomas Ralph B., Aguinid, Blessy Joy M., Dumancas, Gerard G., Malaluan, Roberto M., Lubguban, Arnold A.

“…Cellulosic substrates, including wood and thatch, have become icons for sustainable architecture and construction, however, they suffer from high flammability…”
Get full text

Quantification of Lactobacillus reuteri ProTectis in MRS Broth Using Attenuated Total Reflectance–Fourier Transform Infrared (ATR-FTIR) Spectroscopy and Chemometrics by Bautista, Norwell Brian C., Dumancas, Gerard G., Ubas, Johnziel G., Bandeling, Eleo Jean D., Seduco, Rhett Adrian C., Martizano, Jay O., Janagap, Steve P.

“…There is an increasing global demand for probiotics because of their numerous health benefits. However, a significant percentage of commercially available…”
Get full text

A novel reaction mechanism for the synthesis of coconut oil-derived biopolyol for rigid poly(urethane-urea) hybrid foam application by Dingcong, Roger G, Malaluan, Roberto M, Alguno, Arnold C, Estrada, Dave Joseph E, Lubguban, Alona A, Resurreccion, Eleazer P, Dumancas, Gerard G, Al-Moameri, Harith H, Lubguban, Arnold A

“…Coconut oil (CO) has become one of the most important renewable raw materials for polyol synthesis due to its abundance and low price. However, the saturated…”
Get full text

Coconut power: a sustainable approach for the removal of Cr ions using a new coconut-based polyurethane foam/activated carbon composite in a fixed-bed column by Tomon, Tomas Ralph B, Estrada, Renz John R, Fernandez, Rubie Mae D, Capangpangan, Rey Y, Lubguban, Alona A, Dumancas, Gerard G, Alguno, Arnold C, Malaluan, Roberto M, Bacosa, Hernando P, Lubguban, Arnold A

“…To attain efficient removal of hexavalent chromium (Cr 6+ ) from aqueous solutions, a novel polyurethane foam-activated carbon (PUAC) adsorbent composite was…”
Get full text