Digital Commons Network^™

Antioxidant Properties Of Phytochemicals In Watercress And Mint Extracts In Serum Albumin, Perla Tovar

Undergraduate Research Conference

Hypothesis: Phytochemicals present in mint and watercress help stabilize protein under oxidative stress. Main Objective: Analyze the interaction of HSA with different phytochemicals present in mint extract.

Grm-102 Analysis Of Climate Change Effects On Bird Migration​​ Patterns Using Long-Term Data​​ ​, Aadil Syed, Mary Beyioku, Osi Aizebeokhai, Felix Dogbe

C-Day Computing Showcase

To investigate how climate change has affected bird migration patterns over the past decades, focusing on changes in migration timing, routes, and population trends. This project will aim to identify correlations between climate variables and observed changes in bird behavior, contributing to conservation efforts and climate change research.

Numerical Analysis Of The Seir Model, Abigail R. Beckelhimer

Departmental Honors & Graduate Capstone Projects

Epidemiological models delineate the spread of diseases within a population. In this research project, the Susceptible-Exposed-Infected-Recovered (SEIR) Model was examined numerically for comparison between several methods. Approximations were obtained through Euler’s Method, Taylor’s Method, Runge-Kutta Methods, and Multi-step Methods. Hypothetical situations with parameter alterations were considered in order to better understand the effects the parameters have on the model. The goal of this project was to portray the usefulness of numerical approximations for predicting the behavior of the SEIR model and thus the course of a pandemic.

Leveraging Attention Mechanism To Unlock Gene And Protein Attributes, Ala Jararweh

Computer Science ETDs

Advancing personalized medicine depends on effectively integrating and interpreting the vast, heterogeneous landscape of biological data, from genomic sequences and transcriptomics to the insights embedded in scientific literature. Current machine learning models often focus on single data modalities, limiting their capacity to capture the multifaceted nature of biological systems. We address this gap by developing three attention-based machine-learning models integrating diverse data modalities. Firstly, DeepVul is a multi-task model that leverages cancer transcriptome data to predict genes critical for cancer survival and their corresponding drugs. Subsequently, LitGene refines gene representations by integrating textual information from the scientific literature. Finally, Protein2Text …

Development Of Isoscapes For Hong Kong Freshwater Streams As A Basis For Ecological Studies, Hon Tim Yip

Lingnan Theses (MPhil & PhD)

Applications of isoscapes in terrestrial and marine ecosystems have grown notably as a tool for studying animal movement. However, isoscapes are rarely used in freshwater ecosystem because current iterations of isoscapes commonly model baseline distributions of bulk stable isotope analysis (SIA) data, which may be inadequate for providing the necessary resolution for fine spatial scale stream environments. This issue could potentially be addressed using compound specific stable isotope analysis, a new method that measures the isotopic composition of individual compounds to provide more comprehensive information than bulk SIA. My study focuses on δ¹³C of essential amino acids (EAA-δ …

Preservation And Integrity Of Laboratory Solutions: Understanding The Impact Of Storage Practices On Chemical Stability And Experimental Accuracy, Azza Al Jahdhami

Honors Theses

Chemical storage methods represent a key matter ignored within labs, educational sites, workplaces, and even households. Many people, including various students and instructors within the chemistry field, are unaware of the proper methods for storing and disposing of common chemicals. This study aims to understand the effects of storage practices on chemical stability and experimental accuracy, dealing with the following questions: What kind of effects result from improper chemical disposal? How can improper storage affect the overall chemical effectiveness? Why is sink disposal of many solutions discouraged, and why is waste container disposal always necessary?

Through a literature review, this …

Systematic Characterization Of The Homogeneous And Heterogeneous Hydrogen Halide Dimers, Yuan Xue, Gregory S. Tschumper

Chemistry Faculty Research & Creative Works

This study systematically characterizes the four homogeneous and six heterogeneous hydrogen-bonded dimers formed by hydrogen halide pairs (HX/HY where X, Y = F, Cl, Br, and I). The notation HX⋯HY indicates the direction of the hydrogen bond from the HY donor to the HX acceptor. All stationary points reported for these ten dimer systems are fully optimized utilizing the MP2 and CCSD(T) ab initio methods in conjunction with quadruple-ζ correlation-consistent basis sets augmented with diffuse functions, and their nature is verified by harmonic vibrational frequency computations. The electronic dissociation energies (De) for all ten global minima are evaluated near the …

The Effect Of Soil Conditioner And Growth Booster On The Agronomic Characters And Number Of Nodules Of Black Soybean, Tien Turmuktini, I Putu Rahmat Santoso, Lia Amalia, Nunung Sondari, Elly Roosma Ria, Yenny Muliani, Endang Kantikowati, Tualar Simarmata

Jurnal Kultivasi

Soil Conditioner & Growth Booster (SCGB) is a potion that was made to be used as a soil conditioner and plant growth promoter. SCGB is made from organic matter, biological fertilizers, soil ameliorants, and microelements. This research aims to determine the best dosage of SCGB on the agronomic characters, effective nodules, and black soybean variety ‘Detam-1’ yield. This research was conducted in the experimental field of the Faculty of Agriculture, Winaya Mukti University, Sumedang, Indonesia. This experiment used a simple randomized block design (RBD) with six treatments (0, 3, 6, 9, 12, 15 kg/ha) and repeated 4 times. The observation …

The Fractography Of Bone: Impact Of Flat Bone And The Story It Tells, Abigail Hoffmeister, Chase Freeman, Brandon Mendoza, Nathaniel Fitch, Annie Markarian, Jack Tran, Joshua Lau, Nicholas Tran

Seaver College Research And Scholarly Achievement Symposium

Fractography as a method for fracture analysis has been applied widely to materials that range from glass to ceramics and polymers of varying compositions. Very limited research has been done, however, to apply this knowledge of fractography and fracture patterns to bone. With the goal of telling the story of how a bone was broken, this research focuses on observing known patterns of fracture in polymers, and applying these patterns to bone. For the purposes of this research, porcine scapulae were acquired, dissected from surrounding tissue, and broken using a standardized weight drop at varying heights. The fractured bone was …

The Delocalized Toolbox: Tuning Strain, Energetic And Optoelectronic Properties Of Aryl Heterocyclic Scaffolds For Application-Driven Endeavors, Michael Josef Holzmann

Chemistry and Chemical Biology ETDs

This is a three-part dissertation. Part 1 is composed of chapters 1-3 which revolves around the optimization of cyclononyne reactivity towards 1,3 dipolar cycloadditions. Specifically, the synthesis and reactivity of sulfate, sulfamate and sulfamide-bearing cyclononynes will be discussed. Chapters 4-5 comprise Part 2 which addresses optimization of ruthenium olefin metathesis towards reversible activation and inhibition. The mechanism of reversible inhibition mediated by a hexaarylbiimidazole photo-inhibitor will be elucidated. Part 3 consists of chapters 6-8 which describes structure-functional relationship studies on carbon dots and harnessing that insight for sensing applications. Data relating to assays performed with explosive analytes will be analyzed …

Preparation Of Nanoparticles And Study Of The Effect Of Some Of Their Physical Properties On Epoxy Polymer, Aya N. Abdullah, Niran F. Abeduljabbar

Al-Bahir

Nanoparticles were prepared by the laboratory thermal method from copper, magnesium, and zinc oxides. Different nanoparticles were added to epoxy at weight fractions of (0, 2, 4, 6, 8, 10) wt. %. The structural results from X-ray diffraction showed the appearance of epoxy in a random system, and when reinforced with nanopowders at higher addition ratios, we find the appearance of nanoparticles in a clear crystalline form, while the SEM results showed an increase in consistency and homogeneity with each increase in the proportions of nanoparticles, which appeared clearly during the EDX examination. The hardness of Shore type D was …

Boron Nitride Nanosheets, Quantum Dots, And Dots: Synthesis, Properties, And Biomedical Applications, Raksha Dubey, Matthew Cowles, Zohreh Salimi, Xiuling Liu, Rodney Oakley, Nazmiye B. Yapici, Join Uddin, Dongyan Zhang, Yoke Khin Yap

Michigan Tech Publications

This review examines three aspects of hexagonal boron nitride (h-BN) nanomaterials: properties, synthesis methods, and biomedical applications. We focus the scope of review on three types of h-BN nanostructures: boron nitride nanosheets (BNNSs, few-layered h-BN, larger than ∼100 nm in lateral dimensions), boron nitride quantum dots (BN QDs, smaller than ∼10 nm in all dimensions, with inherent excitation-dependent fluorescence), and boron nitride dots (BN dots, smaller than ∼10 nm in all dimensions, wide bandgap without noise fluorescence). The synthesis methods of BNNSs, BN QDs, and BN dots are summarized in top-down and bottom-up approaches. Future synthesis research should focus on …

Grassland For Our World, F Riveros

IGC Proceedings (1977-2023)

The present-day role of grasslands and fodder is reviewed with respect agriculture, animal production and environmental concerns. The world 's grazing lands are a finite resource nnd, overall, are being badly mnnaEed; in most developing countries action is required now, before it is too lnte. They will continue to be a major source of animal feed for the foreseeable future; encroachment from cropping will con

Human Impact On Terrestrial Ecosytems- What We Know And What We Are Doing About It, H A. Mooney

IGC Proceedings (1977-2023)

At present the impact of humankind on the Barth System is substantial mul will become greater as we continue to add over 80 million people to the global population each year. Collectively the human species utilises over a third of the total fresh water that is available, as well as an equivalent amount of tho total terrestrial productivity. Possil energy is being consumed at a prodigious rnte and fuels, among other things, over a half a billion vehicles. To support the large human population the Earth has been greatly reconfigured with much of the land utilised for grazing and agriculture. …

Grasslands For Sustainable Ecosystems, Malcolm Hadley

IGC Proceedings (1977-2023)

Grasslnnds present many advantages for examining issues related to sustainability. Grasslands include planted pastures as well as a variety of natural rangelands in situations ranging from semi-arid to subhumid. Diversity is also reflected in the spectrum of grassland users and uses, for example, nomadic pastoralism, extensive ranches, intensive pastures, wildlife tourism, game hunting. And in terms of sustainability of resource management, grasslands encompass a wide range of contrasting situations and conflicts in resource use. Heavy grazing pressure associated with increasing human populations in certain tropical savannas, the implications of rural depopulation to traditional pasture management in alpine regions, and the …

Red Clover Hybrid Ryegrass Associations Results Obtained From 1984 To 1987 In Four French Regions, C Pfitzenmeyer, C Longueval

IGC Proceedings (1977-2023)

In France, red clover is often grown in association with a grass in order, if not to increase the yield of forage, at least to improve its quality by having a larger protein content in the harvested product. Among the grass species associated to red clover, Italian ryegrass, too aggressive a competitor, is replaced more and more by hybrid ryegrass. The aims of the present work were the following

1% to obtain quantitative references on the behaviour o[ hybrid ryegrass/red clover associations in four contrasting regions of France ;

2% to check that the presence of clover, through the transfer …

Potentials Of Summer Fodders Under Intensive Cropping System In India, M S. Tiwana, Thakur Singh

IGC Proceedings (1977-2023)

One of the reasons for low milk production in India is the non-availability of good quality fodders in sufficient quantity. Therefore, it is necessary to bridge the gap of this acute short­age of fodder for increasing the milk production. There seems to be no possibility of increasing area under fodders and the only alternative looks to be the ulilization of vacant land (70 days) after harvesting wheat and before the sowing of main summer season crops. However, the growing of these crops may have some effect on the yield of succeeding crops by depleting or replenishing the nutrient status of …

Competitive Effects On Production Of Lolium Perenne L. And Trifolium Alexandrinum L. In Mixture And Mono-Culture, M S. Tiwana, K P. Puri, I S. Thind

IGC Proceedings (1977-2023)

Berscem (Trifolium alexandrinum L.) is grown as a fodder crop by every farmer of north India. Though it is a very good multi-cul legume fodder, yet its dry matter percentage is low which indirectly affects the total dry matter production over a period of 6 to 7 months. Presently no suitable multicut grass for the same period is available which may be grown separately or in mixture with berseem to produce high dry matter yield. The first successful planting of ryegrass in research trials was made in 1976 (Tiwana and Puri, 1984) in India. After that, we became interested …

Herbage Yield Of Annual Ryegrass (Lolium Multiflorium Lam.) And Common Vetch (Vicia Sativa L.) At Different Seeding Rates, M A. Jimenez, O L. Gallegos, M.J L. Castrellon

IGC Proceedings (1977-2023)

Most of the dairy farms in the Central Valley of Mexico have alfalfa and corn silage as major forages. Winters are mild, how­ever, yield of alfalfa is reduced and no corn can be grown. For­age crops as oats, annual ryegrass and common vetch have been grown successfully to supply winter forage (Avendano, 1978; Victoria, 1981). Annual rycgrass generally outyields oats, but a high input of nitrogen is required by annual rye grass (Ciane, 1978). The high cost of N fertilizers prevents their use and cheaper N sources should be sought. Legumes as common vetch grown with annual ryegrass can be …

Performance Of White Clover Cultivars In Mixtures With Orchardgrass In Atlantic Canada, Joanna Fraser, H T. Kunelius

IGC Proceedings (1977-2023)

The climate in the Atlantic Provinces of Canada is ideally suited to pasture production, with up to seven months of grow­ing season in some areas. Moreover, many of the soils are too shallow to support deep-rooted and highly valued forages such as alfalfa (Medicago sativa L.) and corn (Zea mays L.). How­ever, the main limiting factor to pasture production occurs in spring where there are frequent freeze-thaw cycles, which reduce the dependability of snow cover for insulation, and this results in winter injury (Dzikowski et al., 1984). The interest in white clover (Trifolium repens L.) as a …

Comparison Of Ryegrass-White Clover And Competitive Interactions In New Zealand And Wales, W Harris, I Rhodes

IGC Proceedings (1977-2023)

New Zealand and Wales have temperate climates suitable for ryegrass (Lolium species) and white clover (Trifolium repens) pasture. However, pasture management in New Zealand and Wales in fundamentally different. New Zealand pastures are grazed all year, whereas in Wales pastures are mostly not grazed in winter. Moreover New Zealand pastures mostly rely on nitrogen fixed by legumes, whereas nitrogen fertiliser is com­monly applied to Welsh pastures. To consider the basis of differences of pasture management in New Zealand and Wales, data from field experiments at Aberystwyth, Wales (Lat. 52°25'N) and Palmerston North, New Zealand (Lat. 40°20'S) are …

Forage Contribution Of Overseeded Cool-Season Clovers, G D. Mooso

IGC Proceedings (1977-2023)

Warm-season perennial grasses are the foundation of pasture systems in the southeastern U.S. Though well adapted, these species require significant amounts of nitrogen (N) fertilizers to maintain forage production. Nitrogen fertilizers are widely used to improve the yield and quality of grass pastures because it was less expensive and easier to manage than grass-legume mixtures. Cool-season clovers overseeded into dormant peren­nial warm-season swards offer a practical method to extend the grazing season and improve forage quality while capitalizing on the ability of inoculated clovers to supply nitrogen to pro­duction systems thus decreasing production costs (Burton, 1976 ; Hoveland et al., …

Effect Of Irrigation On Vegetation Succession And Forage Regerneration, Fu Jing-Yan

IGC Proceedings (1977-2023)

No abstract provided.

Reponse Du Brome Cathartique A L’Irrigation Premiers Resultats, C Longueval

IGC Proceedings (1977-2023)

L'interet de J'irrigation des graminees prairiales est unc ques­tion souvent debattue dans le sud de la France ou la secheresse estivalc ct frequemment automnale limite considerablement la production de fourrage vert durant cette deuxiemc moitie de l'annee. Dans la region toulousaine, les travaux de l'INRA a Tou­louse (Marty et al., 1977) ct de la Compagnic d'Amenagemenl des Coteaux de Gascogne ont montre, pour la fetuque et le dac­tyle notamment, que si !'irrigation pcrrnet de doubler la pro­duction estivale et automnale. le niveau attcint sans restriction hydrique reste globalement rr{odcstc puisque inferieur a 5 t/ha M.S. a partir du debut de …

Drought Stress And Alfalfa Production In A Mediterranean Environment, T Kipnis, I Vaisman, I Granoth

IGC Proceedings (1977-2023)

Many experimental results have shown a close relationship between total dry matter (DM) yield of alfalfa and annual evapotranspiration (ET). However, this relationship may differ from harvest to harvest (Metochis and Orphanos, 1981), indicating that water use efficiency (WUE) may vary during the growing season, particulary as it is adversely affected by high temperature (Sammis, 1981). Water for irrigating alfalfa is often scarce during the dry Mediterranean summer in Israel. Under such conditions, water is withheld for approximately two months, at a relatively advanced stage of maturity, and the crop is allowed to go to seed, after which irrigation is …

On The Cultivation And Utilization Of Floret Silvergrass (Miscanthus Floridulus) In The Southern Area Of China, Zhu Bangchang

IGC Proceedings (1977-2023)

The plant genus Miscanthus (silvergrass) includes eight species and one variety in China. In the tropical and subtropi­cal area of south China, the silvergrass distributed widely includes the following seven species : Floret silvergrass ( Miscanthus floridulus), Chinese silvergrass ( M. sinensis), Sugary silvergrass ( M. sacchariflorus), Short-hair silvergrass ( M. brevipilus j, Eulalia silver grass ( M. eulalioides), Szechuan silvcrgrass ( M. szechuanensis), Nepal silvergrass ( M. nepalen�� sis). One of them, Floret silvergrass, is the widest in distri­bution and the highest in economical value, and plays a most important role in …

Continuous Machine Line For Grassland Management On Slopes In Czechoslovakia, L Gonda, S Likavsky

IGC Proceedings (1977-2023)

Permanent grass covers in Czechoslovakia are to a great extent spread in sloping and rolling countryside. From the total area presenting 1,672 thousand hectares, 240 thousand ha are stretched on slopes with a gradient of 16 to 22 degrees. Research has shown that from 35 to 48 per cent of these pieces of land arc of size less than 10 ha and there are 75 per cent of intensive pastures with size smaller than 6 ha in typical moun­tainous regions of Czechoslovakia. Mechanization of grass picking on slopes is effected by speci­fic features predetermined by geographical conditions and requirements of …

Studies On Irrigated Tropical Forage Legumes In Sudan, M.A M. Khair

IGC Proceedings (1977-2023)

The drought which had struck Sudan in the last few years had necessitated the introduction of the livestock within the farming systems of the irrigated schemes. This implies growing of enough forages in these irrigated schemes. Lablab, Lablab purpureus, clitoria, Clitoria ternatea and phi­lipesara, Phaseolus trilobus are the most commonly grown for­age legume in the Sudan. Information pertaining to the agronomy of these forages are limited in the Sudan. In this report, two ongoing experiments concerning the agronomy of these legumes are discussed. The main objective of exper­iment I was to study the interactive effects of seed rates and cutting …

Monitoring Annual Medicago Ley Pastures For Management Decisions, P G. Tow

IGC Proceedings (1977-2023)

The Ley Farming System of southern Australia uses a rotation of cereal and pasture comprising annual Medicago (medic) or Trifolium (clover) species. Pastures regenerate in autumn from the permeable fraclion of seed reserves. For M. truncatula cv. Jemalong barrel medic, this is about 10 % annu­ally (Crawford, 1970). In a survey of medic persistence in South Australia, Carter (1982) found that medic seed in the top 5 cm soil was highly correlated with plant density and production potential in the following year. Seed reserves associated with 400-500 plants/m2 were classed as 'good' in commercial practice, but such cases were uncommon, …

Factors Affecting The Productivity Of Elephant Grass, G.E D. Tiley

IGC Proceedings (1977-2023)

Elephant grass (Pennisetum purpureum Schumach) is a highly productive and palatable fodder which is widely grown in the tropics (Bogdan, 1977). Optimum utilisation of its production potential is, however, limited by management factors which are associated with plant form and growth habit (Horrell and Tiley, 1970). These factors were studied in a series of trials at Kawanda Research Station, Kampala, Uganda (0°27'N, 32°30'E). A summary of the princi­ pal results is given.