Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (25)
- Chemistry (18)
- Education (7)
- Engineering (6)
- Life Sciences (6)
-
- Medicine and Health Sciences (6)
- Physical Chemistry (6)
- Science and Mathematics Education (5)
- Social and Behavioral Sciences (5)
- Materials Chemistry (4)
- Earth Sciences (3)
- Engineering Science and Materials (3)
- Environmental Sciences (3)
- Materials Science and Engineering (3)
- Animal Sciences (2)
- Anthropology (2)
- Archaeological Anthropology (2)
- Educational Assessment, Evaluation, and Research (2)
- Environmental Studies (2)
- Law (2)
- Nanoscience and Nanotechnology (2)
- Semiconductor and Optical Materials (2)
- Agriculture (1)
- American Material Culture (1)
- American Studies (1)
- Architecture (1)
- Artificial Intelligence and Robotics (1)
- Arts and Humanities (1)
- Biology (1)
- Catalysis and Reaction Engineering (1)
- Institution
-
- TÜBİTAK (11)
- University of Northern Iowa (8)
- University of South Florida (7)
- Universitas Negeri Malang (6)
- Chinese Chemical Society | Xiamen University (4)
-
- Saint Mary's College of California (4)
- Chulalongkorn University (3)
- University of Arkansas, Fayetteville (3)
- University of Baghdad (3)
- University of Dar es Salaam (3)
- Association of Arab Universities (2)
- Bridgewater State University (2)
- Brigham Young University (2)
- Universitas Negeri Yogyakarta (2)
- Universitas Padjadjaran (2)
- Binghamton University (1)
- Bowling Green State University (1)
- Changsha University of Science and Technology (1)
- China Medical University (1)
- Colby College (1)
- Georgia Southern University (1)
- Henry Ford Health (1)
- Israel Antiquities Authority (1)
- James Madison University (1)
- Karbala International Journal of Modern Science (1)
- Kennesaw State University (1)
- Mansoura Medical Journal (1)
- Neurosciences (1)
- Nova Southeastern University (1)
- Purdue University (1)
- Keyword
-
- Physical Sciences (3)
- Archaeology (2)
- Molecular docking (2)
- 15.1 (1)
- 2011 (1)
-
- 3 (1)
- 4-oxadiazol-2-yl)2-chloroethanethioate (1)
- 41BX1 (1)
- AChE (1)
- APOPO (1)
- Acrylamide (1)
- Activated carbon; Oxidative modification; Porosity properties; Sago waste (1)
- Adsorpsi; perlit; metilen biru (1)
- Adsorption (1)
- Adsorption; Isotherm; Kinetics; Brilliant green; Volcanic pumice; Mechanism (1)
- Alan Poling (1)
- Albumin autoagglutination (1)
- Alpha-chloralose (1)
- Alumni magazine (1)
- Alzheimer's disease (1)
- Analysis ability (1)
- Analytical chemistry (1)
- Anchoring groups (1)
- Anorogenic volcanism (1)
- Antibodies (1)
- Antidiabetic (1)
- Antifouling (1)
- Antimicrobial activity (1)
- Antioxidant; DPPH Method; Maceration Method; IC50; Myristica fragran (1)
- Artificial intelligence (1)
- Publication Year
- Publication
-
- Turkish Journal of Chemistry (8)
- Proceedings of the Iowa Academy of Science (6)
- Journal of Electrochemistry (4)
- Jurnal Pendidikan Sains (4)
- Undergraduate Academic Catalog (4)
-
- Baghdad Science Journal (3)
- Journal of Raptor Research (3)
- Journal of the Arkansas Academy of Science (3)
- Tanzania Journal of Science (3)
- Applied Mathematics & Information Sciences (2)
- Bridgewater Review (2)
- Chimica et Natura Acta (2)
- Iowa Science Teachers Journal (2)
- Turkish Journal of Earth Sciences (2)
- 'Atiqot (1)
- Applied Environmental Research (1)
- BioMedicine (1)
- Colby Magazine (1)
- Condor (1)
- Engineering and Technology Journal (1)
- Food and Machinery (1)
- Great Basin Naturalist (1)
- Henry Ford Hospital Medical Journal (1)
- Human–Wildlife Interactions (1)
- Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State (1)
- International Journal for the Scholarship of Teaching & Learning (1)
- International Journal of Speleology (1)
- Internet Journal of Allied Health Sciences and Practice (1)
- Journal of Agricultural and Marine Sciences (1)
- Journal of Food and Drug Analysis (1)
Articles 1 - 30 of 90
Full-Text Articles in Entire DC Network
Identification Of Active Compounds And Antidiabetic Activity Of Red Shoot (Syzygium Myrtifolium) Leaves Extract With In Vitro And In Silico Methods, Muhamad Iqbal Prakoso, Siti Warnasih
Identification Of Active Compounds And Antidiabetic Activity Of Red Shoot (Syzygium Myrtifolium) Leaves Extract With In Vitro And In Silico Methods, Muhamad Iqbal Prakoso, Siti Warnasih
Pharmaceutical Sciences and Research
Diabetes mellitus (DM) is a chronic metabolic disease that affects approximately 537 million people worldwide (1 in 10 individuals), and its prevalence is projected to reach 783 million by 2045. One of the plants that has the potential to be an antidiabetic is red shoots (Syzygium myrtifolium) since it contains various secondary metabolite compounds such as flavonoids, triterpenoids, steroids, saponins, phenolics, and anthocyanins. This study aimed to evaluate the antidiabetic properties of red shoot leaves extract and to identify and predict interactions between its active compounds and the α-glucosidase receptor. Ethanol, ethyl acetate, and n-hexane extracts of red …
Effect Of Mxene Ti3c2 On The Pvdf Ultrafiltration Membrane Properties And Performance, Tamara Abood, Kadium Shabeeb, Aseel Alzubaydi, Qusay Alsalhy, Pei Goh, Ahmad Ismail, Adel Zrelli
Effect Of Mxene Ti3c2 On The Pvdf Ultrafiltration Membrane Properties And Performance, Tamara Abood, Kadium Shabeeb, Aseel Alzubaydi, Qusay Alsalhy, Pei Goh, Ahmad Ismail, Adel Zrelli
Engineering and Technology Journal
The problem of membrane fouling remains a significant concern in ultrafiltration, a commonly employed method in water treatment due to its high efficacy and minimal energy consumption. This study made a nanocomposite ultrafiltration membrane out of MXene Ti3C2 nanosheets, a new two-dimensional material, to improve the antifouling properties of PVDF membranes. It was possible to incorporate the nanosheets into the membrane structure through in situ embedment during the phase inversion process. To learn more about them, the study investigated the membranes using FESEM, FTIR, water contact angle (CA), and porosity measurements. The application of common flux and rejection tests assessed …
Effects Of Varying Ph, Temperature, And Sucrose Concentration On The Activity Of Invertase Enzyme, B. Rainwater, S. Pratihar
Effects Of Varying Ph, Temperature, And Sucrose Concentration On The Activity Of Invertase Enzyme, B. Rainwater, S. Pratihar
Journal of the Arkansas Academy of Science
The purpose of this research is to study the factors that affect the enzymatic activity of invertase, extracted from baker’s yeast, on hydrolysis of sucrose in aqueous medium. Invertase, a glycoprotein, is an enzyme in the glycoside hydrolase family. It catalyzes the hydrolysis of sucrose producing equimolar mixture of a-D-glucose and b-D-fructose. Invertase shows high affinity for the substrate, and is capable of both cleaving the glycosidic linkage in sucrose and transferring ab-D-O-fructofuranoside residue to an acceptor substrate. (Toledo et al. 2019). A detailed mechanism of the action of invertase was postulated by Shall et al. (Shall et al. 1971). …
Vacuum Consistent Electrochemistry In Ionic Liquid Combined With Oxide Epitaxy, Yuji Matsumoto
Vacuum Consistent Electrochemistry In Ionic Liquid Combined With Oxide Epitaxy, Yuji Matsumoto
Journal of Electrochemistry
We introduce our state-of-the art of “vacuum consistent electrochemistry” to an investigation of the interfaces between oxides and ionic liquid (IL). Pulsed laser deposition (PLD) has been one of the powerful and sophisticated techniques to realize nanoscale preparation of high-quality epitaxial oxide thin films. On the other hand, electrochemistry is a simple, very sensitive, and non-destructive analysis technique for solid-liquid interfaces. To ensure the reproducibility in experiment of the interfaces of such epitaxial oxide films, as well as bulk oxide single-crystals, with IL, we employ a home-built PLD-electrochemical (EC) system with IL as an electrolyte. The system allows one to …
Shallow Water Table In Arid Urban Zone: Preliminary Study At Sultan Qaboos University Campus, Oman, Ali Al-Maktoumi
Shallow Water Table In Arid Urban Zone: Preliminary Study At Sultan Qaboos University Campus, Oman, Ali Al-Maktoumi
Journal of Agricultural and Marine Sciences
A shallow water table (SWT) rises up to several centimeters below the soil surface and even exfiltrates making surface impoundments that are common in humid climates. Recently, SWTs emerged even in arid and semi-arid regions of several metropolitan areas of the Arabian Gulf Cooperation Council (GCC) countries with a pernicious impact on the urban infrastructure, health, ecohydrology of parks and gardens, among others. Quantifying SWT’s dynamics and understanding the associated phenomena of water motion and solute transport are vital for finding the proper mitigation techniques and reducing the risks associated with SWT. In this preliminary study, SWT was delineated, its …
Postseismic Groundwater Quality Investigation In Aquifers Following Earthquake-Induced Demolition Wastes: Hatay (Türkiye) Case Study, Pinar Avci, Gali̇p Yüce
Postseismic Groundwater Quality Investigation In Aquifers Following Earthquake-Induced Demolition Wastes: Hatay (Türkiye) Case Study, Pinar Avci, Gali̇p Yüce
Turkish Journal of Earth Sciences
The February 6, 2023 seismic sequence that hit, the Antakya district of Hatay (Türkiye), killed more than 50,000 people and caused extensive structural damages, resulting in the collapse of 80% of the building stock that generated over 100 million tons of debris. Understanding the impact of seismic events on water resources is highly important for ensuring human and environmental health. Herewith, a study was carried out over the Hatay area to assess the post-earthquake sustainable usability of groundwater for drinking, domestic, and irrigation purposes. 17 water points were investigated in September 2023, encompassing alluvial deposits with relatively high hydraulic conductivity …
News From The Chapters 1986-1987, C. Nicholas Raphael
News From The Chapters 1986-1987, C. Nicholas Raphael
The Geographical Bulletin
During the fall the Gamma Delta Chapter held a series of seminars on topics of controversial nature, such as the causes of glaciation and the extinction of the dinosaurs. The fall picnic was a well-attended success as was the Christmas banquet. During the spring term, the chapter is running a seminar on the Great Plains and is co-sponsoring, with Biology's Tri Beta and Geology's SGE, the visit of Carnegie Museum's Leonard Krishtalka, a paleontologist. The annual spring picnic is held in early May.
Removal Of Some Heavy Metals From Polluted Water Using New Schiff Base For Polyacrylamide With Zeolite Nanocomposites, Zainab Sabeer Abdulsada, Sahar S. Hassan, Sanaa Hitur Awad
Removal Of Some Heavy Metals From Polluted Water Using New Schiff Base For Polyacrylamide With Zeolite Nanocomposites, Zainab Sabeer Abdulsada, Sahar S. Hassan, Sanaa Hitur Awad
Baghdad Science Journal
This work involved the preparation of a new Schiff base ligand derived from poly acrylamide and glutaraldehyde [(2S, 2'S) – N, N' - (pentane-1, 5-diylidene) bis (2- methylbutan amide)] (PAAG) with some heavy metals (Cr +3, Mn + 3, Fe + 3, Co + 2, Ni + 2, Cu + 2, Zn + 2, Cd + 2) to produce corresponding complexes. Schiff bases and their metal complexes are characterized using FTIR spectral, Uv-Vis spectroscopy, conductivity, magnetic moments, Thermal gravimetric analysis (TGA), x-ray diffraction, scanning electron microscope (SEM) and atomic force microscope (AFM). The prepared polymer was used with zeolite to …
Effect Of Inulin From Dahlia Tubers (Dahlia Variabilis) Extract On Insulitis Severity And Insulin Expression In Diabetic Rats, Ismawati Ismawati, Saryono Saryono, Mukhyarjon Mukhyarjon, Ilhami Romus, Veni Dayu Putri, Sri Yanti, Fitri Dyna, Nada Idzdihari Adesti
Effect Of Inulin From Dahlia Tubers (Dahlia Variabilis) Extract On Insulitis Severity And Insulin Expression In Diabetic Rats, Ismawati Ismawati, Saryono Saryono, Mukhyarjon Mukhyarjon, Ilhami Romus, Veni Dayu Putri, Sri Yanti, Fitri Dyna, Nada Idzdihari Adesti
BioMedicine
Background: Dahlia (Dahlia variabilis), a widely cultivated ornamental plant in Indonesia, is known to contain 84.08% inulin in its tubers. Numerous studies have demonstrated the antidiabetic potential of inulin from various plant sources. However, most of the research is in the form of a mixture of inulin with other active substances, and no one has analyzed the effects of inulin derived from dahlia tubers. This study examines the effect of inulin from dahlia tuber extract on blood glucose levels, serum insulin expression, pancreatic tissue insulin expression, homeostatic model assessment of insulin resistance (HOMA-IR), and the extent of …
Pengaruh Perlit Sebagai Adsorben Pada Adsorpsi Zat Warna Metilen Biru, Mardiana Rimba Utami, Kapti Riyani, Tien Setyaningtyas
Pengaruh Perlit Sebagai Adsorben Pada Adsorpsi Zat Warna Metilen Biru, Mardiana Rimba Utami, Kapti Riyani, Tien Setyaningtyas
Chimica et Natura Acta
Aktivitas industri di zaman modern yang berkembang pesat dapat menyebabkan permasalahan lingkungan. Hal ini dikarenakan bertambahnya jumlah limbah yang dihasilkan akibat peningkatan produksi. Limbah zat warna tanpa pengolahan dapat menghambat penetrasi cahaya matahari, aktivitas fotosintesis, dan pertumbuhan biota air. Salah satu limbah zat warna yang sering ditemukan adalah metilen biru. Pengolahan zat warna metilen biru dapat menggunakan metode adsorpsi yang praktis, mudah dilakukan dengan biaya rendah. Penelitian ini menunjukkan aktivitas adsorpsi terbaik metilen biru oleh adsorben perlit terhadap parameter pH, waktu kontak, serta penentuan kinetika dan isoterm adsorpsi. Aktivitas terbaik perlit dalam mengadsorpsi metilen biru adalah pada pH 9 dengan …
Seabird Observations In The Southern Ocean South Of Africa, Summer 1975/1976, M. D. Flora
Seabird Observations In The Southern Ocean South Of Africa, Summer 1975/1976, M. D. Flora
Marine Ornithology
No abstract provided.
Plasma Chemistry Reference Values In Free-Living Bonelli's Eagle (Hieraaetus Fasciatus) Nestlings, Javier Balbontin, Miguel Ferrer
Plasma Chemistry Reference Values In Free-Living Bonelli's Eagle (Hieraaetus Fasciatus) Nestlings, Javier Balbontin, Miguel Ferrer
Journal of Raptor Research
No abstract provided.
Serum Chemistry Values For Nestling Bald Eagles (Haliaeetus Leucocephalus&Rsqb; In Florida Bay, Everglades National Park, Brian Mealey, Greta M. Parks, Carlos M. Pages, Brian A. Millsap, Orin L. Bass, Gregory D. Bossart
Serum Chemistry Values For Nestling Bald Eagles (Haliaeetus Leucocephalus&Rsqb; In Florida Bay, Everglades National Park, Brian Mealey, Greta M. Parks, Carlos M. Pages, Brian A. Millsap, Orin L. Bass, Gregory D. Bossart
Journal of Raptor Research
No abstract provided.
Blood Chemistry, Cytology, And Body Condition In Adult Northern Goshawks (Accipiter Gentilis), Lauri A. Hanauska-Brown, Alfred M. Dufty Jr., Gary J. Roloff
Blood Chemistry, Cytology, And Body Condition In Adult Northern Goshawks (Accipiter Gentilis), Lauri A. Hanauska-Brown, Alfred M. Dufty Jr., Gary J. Roloff
Journal of Raptor Research
No abstract provided.
Adsorption Behavior And Mechanism Of Brilliant Green Dye Onto Acid-Modified Mesoporous Volcanic Pumice, Suchada Sawasdee, Prachart Watcharabundit
Adsorption Behavior And Mechanism Of Brilliant Green Dye Onto Acid-Modified Mesoporous Volcanic Pumice, Suchada Sawasdee, Prachart Watcharabundit
Applied Environmental Research
Water pollution is a major problem in the environment. The important one is the dying effluent from the textile industry. Dye effluent has affected human health and aquatic life. Recently, natural adsorbents have been most commonly used for dye treatment wastewater. This study explores the adsorption mechanism of brilliant green onto HCl-modified pumice. It involves a comparative analysis of the raw and HCl-modified pumice's characterization and adsorption properties. The adsorption experiments were carried out by considering several parameters, such as pH, contact time, initial dye concentrations, and temperatures. The research indicated that the raw and acid-treated pumice possess Si-OH and …
Analysis Of Students' Perceptions On The Freedom Of Learning - Independent Campus (Mbkm) Program At Chemistry Study Program Of Ma Chung University, Yuyun Yuniati, Lilis Lestari Wilujeng
Analysis Of Students' Perceptions On The Freedom Of Learning - Independent Campus (Mbkm) Program At Chemistry Study Program Of Ma Chung University, Yuyun Yuniati, Lilis Lestari Wilujeng
Jurnal Penelitian dan Evaluasi Pendidikan
Considering that Indonesian education has gone through such a long journey from 1922 to 2022 now, it is necessary to have an educational program that is able to meet the demands of workers' needs in this era of globalization. In the end, the Directorate General of Higher Education, Research, and Technology designed an education policy system in the realm of higher education, namely "Freedom of Learning - Independent Campus", as an accurate strategy for optimizing academics in today's Indonesia. In this study, a survey was aimed at 40 undergraduate students of the Chemistry Study Program at Ma Chung University. Data …
Comparison Of Metal-Carbenoid Reactions Of Β-2-Five-Membered Heteroaryl Substituted Α,Β-Unsaturated Ketones, Kumsal Eroğlu, Olcay Anaç, Füsun Şeyma Kişkan
Comparison Of Metal-Carbenoid Reactions Of Β-2-Five-Membered Heteroaryl Substituted Α,Β-Unsaturated Ketones, Kumsal Eroğlu, Olcay Anaç, Füsun Şeyma Kişkan
Turkish Journal of Chemistry
In this study, β-2-heteroaryl substituted (N-methyl 2-pyrrolyl, 2-thiophenyl, 2-furyl) α,β-unsaturated ketones were reacted with two α-diazo carbonyl compounds that had different characteristics (dimethyl diazo malonate and 1-diazo-1-phenyl-propane-2-one) in the presence of both copper and rhodium catalysts. In the case of reactions with N-methyl 2-pyrrolyl α,β-unsaturated ketones, the major product was the insertion derivative. However, in the reactions of 2-thiophenyl and 2-furyl α,β-unsaturated ketones with dimethyl diazomalonate (acceptor-acceptor disubstituted), only dihydrofuran products were formed over carbonyl ylides. When 2-thiophenyl and 2-furyl α,β-unsaturated ketones were reacted with 1-diazo-1-phenyl-propane-2-one (donor-acceptor disubstituted), 1-phenylpropane-1,2-dione was obtained under our reaction conditions.
A Computational Study On The Impact Of Anchoring Groups On The Optical And Electronic Properties Of Triphenylamine-Based Dyes For Dye-Sensitized Solar Cell Applications, Geradius Deogratias, Grace Kinunda
A Computational Study On The Impact Of Anchoring Groups On The Optical And Electronic Properties Of Triphenylamine-Based Dyes For Dye-Sensitized Solar Cell Applications, Geradius Deogratias, Grace Kinunda
Tanzania Journal of Science
Anchoring groups are crucial for enhancing the performance of dye-sensitized solar cells (DSSCs). For instance, cyanoacrylic acid serves as the primary anchoring group in DSSC due to its crucial elements required for effective electron transport. However, it suffers from degradation. To address this limitation, this study proposes alternative cyano-based anchoring groups for sensitizers. Density functional theory (DFT) and time-dependent DFT were used to investigate the optical and electronic properties of the dyes. The studied dyes (excluding the dye containing OH group) displayed three absorption bands within the visible and NIR regions. Low-energy peaks ranged from 498 to 576 nm, corresponding …
Synthesis, Theoretical Study, And Biological Evaluation Of Some Metal Ions With Ligand "Methyl -6-[2-(4-Hydroxyphenyl) -2-((1-Phenylethylidene) Amino) Acetamido] -2,2-Dimethyl-5—Oxo-1-Thia-4-Azabicyclo [3.2.0] Heptane-3-Carboxyylate, Sahar S. Hassan, Nafeesa J. Kadhim, Zahraa. A. Jaber
Synthesis, Theoretical Study, And Biological Evaluation Of Some Metal Ions With Ligand "Methyl -6-[2-(4-Hydroxyphenyl) -2-((1-Phenylethylidene) Amino) Acetamido] -2,2-Dimethyl-5—Oxo-1-Thia-4-Azabicyclo [3.2.0] Heptane-3-Carboxyylate, Sahar S. Hassan, Nafeesa J. Kadhim, Zahraa. A. Jaber
Baghdad Science Journal
Schiff base (methyl 6-(2- (4-hydroxyphenyl) -2- (1-phenyl ethyl ideneamino) acetamido) -3, 3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0] heptane-2-carboxylate)Co(II), Ni(II), Cu (II), Zn (II), and Hg(II)] ions were employed to make certain complexes. Metal analysis M percent, elemental chemical analysis (C.H.N.S), and other standard physico-chemical methods were used. Magnetic susceptibility, conductometric measurements, FT-IR and UV-visible Spectra were used to identified. Theoretical treatment of the generated complexes in the gas phase was performed using the (hyperchem-8.07) program for molecular mechanics and semi-empirical computations. The (PM3) approach was used to determine the heat of formation (ΔH˚f), binding energy (ΔEb), and total energy (ET) for ligands and metal complexes …
University Of Richmond Magazine - Summer 2023
University Of Richmond Magazine - Summer 2023
University of Richmond Magazine
The University of Richmond's Alumni Magazine was first published as The Alumni Bulletin in 1936 and continues to this day as the University of Richmond Magazine.
Surface Modification Of Activated Carbon From Sago Waste, Khaeriah Dahlan, Yane Oktovina Ansanay, Alda Filadelfi Runggaweri, Marlifon Merani
Surface Modification Of Activated Carbon From Sago Waste, Khaeriah Dahlan, Yane Oktovina Ansanay, Alda Filadelfi Runggaweri, Marlifon Merani
Journal of Metals, Materials and Minerals
In this paper, we analyzed the effect of surface modification on the surface properties of the active carbon from sago waste using varied oxidizers, namely H2O2, HNO3, and H2SO4. The ordinary active carbon has an initial surface area of 546.6 m2∙g-1, with a phenol and carboxylic functional group. The porosity, functional groups and morphological surface, together with the chemical composition of activated carbon were examined using a nitrogen adsorption-desorption through the Brunauer Emmett Teller (BET) method and the calculation of Barret-Joyner-Hall (BJH), a Fourier-transformed infrared spectroscopy, and a scanning electron microscopy with energy dispersive spectroscopy. The results found that the …
Structure-Emission Relationship Of Some Coumarin Laser Dyes And Related Molecules: Prediction Of Radiative Energy Dissipation And The Intersystem Crossing Rate Constants, Msa Abdelmottaleb
Structure-Emission Relationship Of Some Coumarin Laser Dyes And Related Molecules: Prediction Of Radiative Energy Dissipation And The Intersystem Crossing Rate Constants, Msa Abdelmottaleb
Turkish Journal of Chemistry
Dye lasers are commonly used in optical investigation because their solutions in organic solvents deliver tunable, coherent emissions. They exhibit intense fluorescence owing to some specific spectroscopic characteristics. One drawback of the laser dyes is that it shows excessive triplet-state losses (TSLs.) The lack of theoretical predictions of fluorescence rates, intersystem crossing (ISC), and phosphorescence in laser dyes prompted us to report on the predicted rates of radiative and nonradiative transitions of some laser dyes. Structural engineering by some substituents influencing the simulated rates of coumarin laser dye derivatives for an efficient operation was investigated. The NH$_{2}$ functional group renders …
Problem Solving Ability: Symbolic Level Analysis In Chemistry Education Students On The Topic Of Chemical Equilibrium, Aceng Haetami, Elsya Febiana Fahira, La Rudi, Benjamin Laurentino Vaz
Problem Solving Ability: Symbolic Level Analysis In Chemistry Education Students On The Topic Of Chemical Equilibrium, Aceng Haetami, Elsya Febiana Fahira, La Rudi, Benjamin Laurentino Vaz
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan
This study aimed to determine the ability to solve chemical problems at the symbolic level of chemistry education students and to determine student responses to the Three Tier test question model. The method used descriptive. The sample this study were chemistry education students at Halu Oleo University with totalling 73 students. Data collection in this study was carried out using research instruments in the form of Three Tier Test questions and student response questionnaires to the question model. The analysis results show that 16.3% of students understand the concept, 60.3% have misconceptions, and 23.4% do not understand the concept.
Antioxidant Activity Of Nutmeg Mace (Myristica Fragrans) Graded Extract, Ghina Siti Nurhayati, Dimas Danang Indriatmoko, Erwi Widi Kristiadi, Anisa Fitriani, Tarso Rudiana
Antioxidant Activity Of Nutmeg Mace (Myristica Fragrans) Graded Extract, Ghina Siti Nurhayati, Dimas Danang Indriatmoko, Erwi Widi Kristiadi, Anisa Fitriani, Tarso Rudiana
Chimica et Natura Acta
Nutmeg (Myristica fragrans) contains essential oils and can be applied in industrial scale because it has medicinal benefits such as stimulating the heart system, stomachache, rheumatism, muscle pain, toothache, eliminating toxins in the liver, flatulence, and antioxidant. The purpose of this study was to determine the antioxidant activity of the nutmeg mace graded extract. The research methods include plant determination, sample preparation, extraction by maceration method, phytochemical test, and antioxidant test using the DPPH method. The yield of Mace Nutmeg extract obtained was 30.3% n-hexane, 8.79% ethyl acetate, and 3.79% methanol and the IC50 value of each mace nutmeg extract, …
All In: How Colby Met Covid-19, Gerry Boyle
All In: How Colby Met Covid-19, Gerry Boyle
Colby Magazine
It was last August and first-years were arriving, unloading cars, lugging stuff into residence halls. President David A. Greene was on hand for the big day, meeting students, greeting parents, only to hear, “We expect to be back here within two weeks to a month to pick up our child.” It didn’t happen.
Assessment Of Climate Change Impact, Resistant Behavior, And Adaptation Possibilities On 16th To 18th Century Ce Mughal Period’S Brick Monumental Structures Of Haryana Region Of The Indian Subcontinent, Amit Kumar Mishra
NAKHARA (Journal of Environmental Design and Planning)
The value of the monumental structures of the Mughal era (1526 CE-1761 CE) of the Haryana region of India lies not only in its role as a witness to the rise and fall of the Mughal and Colonial eras, but also because it provides physical evidence for the austere tradition of give and take comprising the living knowledge and skill of Islamic architecture and indigenous skills, along with the geological origin of raw materials, artificial manufacturing, longevity, and durability of these huge earth-based masonry structures. Unfortunately, alterations due to the vagaries of weather and climate have badly affected the monumental …
Modeling Vitexin And Isovitexin Flavones As Corrosion Inhibitors For Aluminium Metal, Abdullahi Muhammad Ayuba, Umaru Umar
Modeling Vitexin And Isovitexin Flavones As Corrosion Inhibitors For Aluminium Metal, Abdullahi Muhammad Ayuba, Umaru Umar
Karbala International Journal of Modern Science
Theoretically, the aluminium corrosion inhibitive performance of vitexin (VTX) and isovitexin (SVT) were evaluated with a view of establishing the mechanism of the inhibition process. Calculations which include the consideration of several global descriptors were studied to describe and correlate the reactivity of the molecules with the computed descriptors. First and second-order condensed Fukui functions were employed to analyze local reactivity parameters, while simulations involving the adsorbed molecules on Al (1 1 0) surface were conducted through quench dynamic simulations and the mechanism of physical adsorption was established with SVT relatively been a better inhibitor on Al surface than VTX.
Bpbl (Blended Problem-Based Learning) On Extraction And Chromatography Materials Using Coffee Topics To Measure Student Learning Outcomes And Soft Skills, Yismia Ikha Sari, Irma Kartika Kusumaningrum, Surjani Wonorahardjo
Bpbl (Blended Problem-Based Learning) On Extraction And Chromatography Materials Using Coffee Topics To Measure Student Learning Outcomes And Soft Skills, Yismia Ikha Sari, Irma Kartika Kusumaningrum, Surjani Wonorahardjo
Jurnal Pendidikan Sains
This research and development study of BPBL (Blended Problem-Based Learning) teaching materials aimed to measure their effectiveness on students’ learning outcomes in extraction and chromatography courses, as well as on students’ soft skills. Based on a preliminary questionnaire regarding the need for developing BPBL teaching materials, students reported difficulties in understanding the concepts of extraction and chromatography, resulting in learning outcomes that did not meet the required standards. Students also recognized that improving soft skills is important for personal development, social participation, and success in the workplace. BPBL teaching materials combine blended learning and problem-based learning approaches. The use of …
Inquiry Based Learning With Oe3r Strategy And Its Impact On Students' Mastery Of Basic Concepts Of Analytical Chemistry, Pradita Rahmadhani, Sutrisno Sutrisno, Hayuni Retno Widarti
Inquiry Based Learning With Oe3r Strategy And Its Impact On Students' Mastery Of Basic Concepts Of Analytical Chemistry, Pradita Rahmadhani, Sutrisno Sutrisno, Hayuni Retno Widarti
Jurnal Pendidikan Sains
The purpose of implementation of OE3R Strategy on lecturing Fundamental of Analytical Chemistry are to determine differences in students’ conceptual understanding achievements. This researchidesigniusingiaiQuasi-experimental (one group pre-test-post-test) with different treatment for both groups. The Experimental Group learns using OE3R Strategy, then the Control Group using the conventional strategy. The subject of research was a student in Fundamental of Analytical Chemistry courses in the Chemistry Department State University of Malang. The result shows that inquiry-based learning with OE3R Strategy as innovation learning effective to make differences of students’ conceptual understanding achievements on Fundamental of Analytical Chemistry courses.
Pesticide Residue Monitoring In Marketed Fresh Vegetables And Fruits In Central Taiwan (1999-2004) And An Introduction To The Haccp System, J.-M. Chang, T.-H. Chen, T.-J. Fang
Pesticide Residue Monitoring In Marketed Fresh Vegetables And Fruits In Central Taiwan (1999-2004) And An Introduction To The Haccp System, J.-M. Chang, T.-H. Chen, T.-J. Fang
Journal of Food and Drug Analysis
The objectives of this study are: (1) to collect and analyze the data of pesticide residues in vegetables and fruits in central Taiwan; (2) to compare the statistics of pesticide residues data in vegetables and fruits in 4 regions of Taiwan; and (3) to introduce the Hazard Analysis Critical Control Point (HACCP) system to industries and growers of vegetables and fruits for improving the safety of agricultural products. The 1999 samples of vegetables and fruits were collected from supermarkets and traditional markets by 6 local bureau of health in central Taiwan (1999-2004) and analyzed for the presence of 70∼79 pesticide …