Digital Commons Network^™

Numerical Simulation Of Vibration Viscoelastic Pipeline, Kh.M. Komilova

Irrigation and Melioration

The article studies the parameters of a pulsating fluid flow that lead to vibration in the pipeline. A mathematical model has been developed for the vibration of a viscoelastic pipeline based on the theory of beams when a pulsating fluid flows through it. Using the Bubnov-Galerkin method, based on a polynomial approximation of deflections, the problem is reduced to the study of systems of ordinary integro-differential equations, the solution of which is found by a numerical method. A computational algorithm has been developed for solving the problems of oscillation of composite pipelines with a flowing pulsating fluid. The influence of …

Innovative Rotor Casing And Leveling Apron For Combined Tillage Machine, A.A. Akhmetov, L.B. Muratov

Irrigation and Melioration

Investigations of the design of a combined machine equipped with an innovative casing and a leveler apron are presented, and the parameters of the leveler apron are substantiated. It was experimentally established that when the height of the drawing prism is exceeded by more than 200 mm, due to the falling of the crumbling part of the soil onto the rotor, the soil is thrown forward in the direction of the machine. Therefore, to eliminate soil waste, it is necessary either to reduce the height of the drag prism, or to increase the distance between the rotor and the leveling …

Ensuring The Uniformity Of Movement Of The Working Bodies Of The Machine For Processing Ridges In The Depth Of Travel, А. Tukhtakuziev, K.G. Abdulkhaev

Irrigation and Melioration

The article theoretically investigates the issue of identifying ways to ensure the deepening of the working bodies of the machine for processing ridges to a given processing depth and its required uniformity of stroke. The research results show that the deepening of the working bodies of the ridges processing machine to a given processing depth and its required uniformity is provided mainly due to the correct choice of the vertical distance from its reference plane to the lower connection points. The novelty of the conducted research lies in the fact that an analytical dependence has been obtained that allows us …

Develepment Of Land Market In Eastern European Countries And Experience For Uzbekistan, A.R. Nurnazarov

Irrigation and Melioration

The article examines the experience of the formation of the agricultural land market in Eastern European countries since the 90 s of the twentieth century, the problems and features of its devel-opment, the impact of the land market on the economies of countries. Particular attention is paid to the transformation of land ownership, methods of land privatization, land pricing, restrictions on land purchase, regulation of land relations in market conditions, issues of granting the right to pur-chase land to foreign individuals and legal entities, requirements for land owners for the presence of a special agricultural education or 3-5 years of …

The Developmet Of Competences Via Techniques For Enhancing Esp (English For Specific Purposes) Vocabulary Of Learners, G. Eshchanova

Irrigation and Melioration

In the article a recent trend in higher education is ESP (English for Specific Purposes) courses is discussed. These courses are designed around students’ needs based on their field of study. The goal is to strengthen students’ proficiency and help them to get ready to cope with everyday situations and deal with professionals in many fields such as: engineering, medicine, education and IT. There are many training sessions organized by international experts whose goal is to train local teachers to teach these courses successfully. In order to develop an ability to learn new vocabulary, for both general English and technical …

Development Of Girls’ Sports, A.R. Khodjanov, V.V. Mahmudov

Irrigation and Melioration

The article addresses current issues of higher education, taking into account its specifics. She has been providing appropriate advice on improving girls' physical well-being. The use of opportunities and qualities has an impact on the creation of comfortable conditions for female athletes. For girls involved in sports, the creation of impressive quality and possible conditions is considered. As a result, the girls-athletes of our institute took 2-3 places in the district and city qualifying rounds of chess, table tennis and won a ticket to the republican stage. At the republican stage, 2 female students of our team took 4th place …

The Imrovement Of Esp Teaching Via Methodical Provision At Technical Institution: Specializm-Oriented English Via Agriculture, G. Eshchanova, U. Nullaev

Irrigation and Melioration

In the given article the ways that ESP combines subject matter and English language teaching is discussed. This approach can be highly motivating for students because students are able to apply what they learn in their English classes to their main field of study, whether it be law, computing, business, tourism, etc. Being able to use the vocabulary and structures that they learn in a meaningful context reinforces what is taught and increases their motivation. Nevertheless, ESP concentrates more on language in context than on teaching grammar and language structures. Additionally, the ways of teaching English in ESL classes and …

10 Keys On Volunteerism, Angie Holzer

Journal of Nonprofit Innovation

Every year, the majority of nonprofits are run and sustained by volunteers around the United States (McKeever, 2016). There is a great need to better understand how to obtain and then retain these volunteers in helping move your cause forward as a nonprofit. This article will address 10 ways to approach volunteerism as you find volunteers, and then work to actively retain them in your efforts.

Full Issue - Volunteerism

Journal of Nonprofit Innovation

No abstract provided.

What Interactive Web Features Are Most Used, Travis Tyler

Experiential Learning Projects

The use of interactive features in websites has become common place on the internet. People use these tools to help navigate and understand the content related to that website. However, due the large variety of websites it can be tricky to understand what features are best to utilize based on the topic of your site. This paper seeks to address this issue by researching how users interact and utilized different features on different websites. Research is gathered via scholarly articles and direct data gathered from volunteers. This data shows users tend to favor more interactive tools to help with navigation, …

Development And Validation Of A New Scale To Assess Air Quality Knowledge (Aqiq), Alessandro Del Ponte, Lina Ang, Lianjun Li, Noah Lim, Wilson Wai San Tam, Wei Jie Seow

Political Science Faculty Articles and Research

Background

Methods

Latest Research On Volunteerism

Journal of Nonprofit Innovation

Read about the latest research and statistics on volunteering.

Why I Volunteer, Demi Sintz

Journal of Nonprofit Innovation

I began working with nonprofit organizations as a youth advocate for Epilepsy Awareness, from there I became a Director of Fundraising events for an organization that assists families with the expenses of training and matching with a service dog. Later I spent 18 months in L.A County volunteering in the community and leading youth seminars on positive social media use and training community leaders on the importance of family history and making it an accessible tool in their communities. Now I am a marketing advisor at WikiCharities, a platform that makes collaboration between organizations possible and increases accessibility to care …

The “Muddle” Of Landscape And Machinery In E.M. Forster’S Howard’S End And A Passage To India: An Ecocritical Reading, Ryan Ignatius Vera

Theses and Dissertations

This is an ecocritical reading of E.M. Forster's A Passage to India and Howard's End. I argue that Forster is concerned with imperial power structures that damaged the environment, as well as the looming aftereffects of the Industrial Revolution on both landscape and the people that reside in it.

Determination Of Interferon Gamma Protein In Serum Of Breast Cancer Patients Using The Elisa, Noor Hassan, Abbas Mohammed

Journal of Applied Sciences and Nanotechnology

Interferon gamma (IFN-γ) is a cytokine involved in the induction and modulation of various immune responses. INF-γ has recently been associated with breast cancer and the stage of the disease. Also, it can be used as a cancer marker in determining disease activity. The ELISA test is a technique for identifying antigens in biological materials. The ELISA test is used for the detection of antibodies against target antigen through highly antibody-antigen interactions. In this study, the blood samples were taken from 88 Iraqis, 30 healthy controls, and 58 breast cancer patients (ranging from 35 to 52 years of age). During …

The Circle Of Life: The Mathematics Of Predator-Prey Dynamics, John Butler, Rebecca Brady

Articles

Some animals hunt other animals to feed themselves; these animals are called predators. Animals who are hunted and eaten are known as prey. What do you think would happen if a predator were introduced to an ecosystem where the prey previously lived without fear of being hunted? Would the new predator eat all the prey animals until they go extinct? Actually, the relationship between predator and prey is far more interesting than this. In this article, we show what the predator-prey relationship looks like over time and explain how scientists can make predictions about future population levels, all using basic …

Ice And Supercooled Liquid Water Distributions Over The Southern Ocean Based On In Situ Observations And Climate Model Simulations, Ching An Yang, Minghui Diao, Andrew Gettelman, Kai Zhang, Jian Sun, Greg Mcfarquhar, Wei Wu

Faculty Research, Scholarly, and Creative Activity

Three climate models are evaluated using in situ airborne observations from the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study (SOCRATES) campaign. The evaluation targets cloud phases, microphysical properties, thermodynamic conditions, and aerosol indirect effects from −40°C to 0°C. Compared with 580-s averaged observations (i.e., 100 km horizontal scale), the Community Atmosphere Model version 6 (CAM6) shows the most similar result for cloud phase frequency distribution and allows more liquid-containing clouds below −10°C compared with its predecessor—CAM5. The Energy Exascale Earth System Model (E3SM) underestimates (overestimates) ice phase frequencies below (above) −20°C. CAM6 and E3SM show liquid and ice water …

A Strategy For Achieving Sustainable Urban Development In Coastal Informal Areas Through A Participatory Approach., Reem Elnady, Alaa El-Eashy, Asmaa El Badrawy

Mansoura Engineering Journal

Coastal areas have highly productive economic values for its residents, with huge potentials in fisheries and marine resources. The human factor with social capitals is vital potential in these coastal areas. The inhabitants work on fishing activities, intermediary traders, and other coastal related businesses. However, some of these areas are characterized with unplanned areas, poor livelihood, deteriorated buildings, with no green or public spaces. Moreover, these areas also suffer due to its far locations from cities’ centers and their eliminating from the urban development plans. In general, these problems have transformed them into coastal informal areas. Previous studies proved that …

Gc/Msprofilingandexvivoantibacterialactivityofsalvadora Persica (Siwak) Against Enterococcus Faecalis As Intracanal Medicament, Noha Swilam, Nahla Ayoub, Nadia Badr, Saeed S Al-Ghamdi,, Arwa Alzahrani, Rahaf Alsulaimani, Afnan Nassar, Rawabi Qadi

Pharmacy

Salvadora persica L. (S. persica, Siwak) has been used for many centuries as oral hygiene tools, particularly in Saudi Arabia. This study aimed to assess the effectiveness of S. persica petroleum ether extract (SPE) as an intracanal bactericidal for endodontictreatmentagainstEnterococcusfaecalis.CalciumhydroxideCa(OH)2 gold standard intracanal medicament was used for comparison.Methods.Thegaschromatographymassspectrometry(GC/MS)analysis was carried out to identify the components of SPE. First, the consistency of SPE was accomplished according to ANSI/ADA specification no 57. Forty-five single-rooted mandibular premolars were infected with that of E. faecalis suspension. Colony-forming units (CFU) were counted before the medicaments’ application (CFU-1) and after seven days of their applications …

Gender-Based Characteristics Of Micro, Small And Medium-Sized Enterprises In An Emerging Country: Is This A Man’S World?, Angelica Maria Sanchez-Riofrio, Nathaniel C. Lupton, Segundo Camino-Mogro, Álvaro Acosta-Ávila

Faculty Research, Scholarly, and Creative Activity

Purpose: Worldwide, Ecuador is one of the countries with the most entrepreneurial activity from micro, small and medium-sized enterprises (MSMEs). However, the effect of adopting the US dollar (dollarization), over which the central bank has no control, combined with being mainly an exporter of primary products, as well as strategic currency devaluation by neighboring economies, has created a difficult situation, especially for Ecuadorian women’s MSMEs. This paper aims to study the relationship between female ownership and Ecuadorian MSMEs’ financial, economic and social outcomes.

Design/methodology/approach: The authors compile a near-population panel of 617,804 firm-year observations representing an unbalanced panel of 112,917 …

Rapid Ac Electrokinetic Micromixer With Electrically Conductive Sidewalls, Fang Yang, Wei Zhao, Cuifang Kuang, Guiren Wang

Faculty Publications

We report a quasi T-channel electrokinetics-based micromixer with electrically conductive sidewalls, where the electric field is in the transverse direction of the flow and parallel to the conductivity gradient at the interface between two fluids to be mixed. Mixing results are first compared with another widely studied micromixer configuration, where electrodes are located at the inlet and outlet of the channel with electric field parallel to bulk flow direction but orthogonal to the conductivity gradient at the interface between the two fluids to be mixed. Faster mixing is achieved in the micromixer with conductive sidewalls. Effects of Re numbers, applied …

Mind The Gap: A Comparative Approach For Fixing Volcker, Learning From Liikanen, And Using Vickers To Repair The U.S. Banking System, Rachel Sereix

Duke Journal of Constitutional Law & Public Policy Sidebar

After the 2008 financial crisis, Congress, courts, and international banking agencies alike determined that their current banking infrastructures were inadequate to prevent such crises in the future. The Dodd-Frank Wall Street Reform Acttried to solve the problem by reducing derivatives-related risk through legislative provisions that increased capital and liquidity requirements for all banks. Yet, banks continued to find means to subvert the system and Congress remained relatively silent on the issue after the passage of Dodd-Frank—failing to amend Dodd-Frank in any meaningful way. Looking towards European peers for guidance about how to reform the United States’ banking regime has often …

The Guardian, Week Of December 27, 2021, Wright State Student Body

The Guardian Student Newspaper

News articles from The Guardian for the week of December 27, 2021. The Guardian is the official student-run newspaper for Wright State University. It has been published regularly since March of 1965.

Remembering Roger M. Flynt Jr., Bill Dabney, Flynt Family

University of Mississippi News

UM law endowment pays tribute to longtime telecommunications executive

Application Of A Bacteriophage–Sanitizer Combination In Post-Harvest Control Of E. Coli O157:H7 Contamination On Spinach Leaves In The Presence Or Absence Of A High Organic Load Produce Wash, Badrinath Vengarai Jagannathan, Steven Kitchens, Stuart Price, Melissa Morgan, Paul Priyesh Vijayakumar

Animal and Food Sciences Faculty Publications

Foodborne illness due to the consumption of contaminated products continues to be a serious public health issue. Bacteriophages might provide a natural and effective way to control and reduce the pathogenic bacterial population on food products. Researchers have conducted various experiments to prove their effectiveness against different pathogens and their ability to act as a natural intervention to control pathogen populations, especially in the food industry. In this study, a cocktail of bacteriophages (phages) was added to wash water in the presence of a high organic load along with commercially used sanitizers (chlorine or Sanidate 5.0) to study the efficacy …

Case Studies Of Atmospheric River-Induced Surface Changes In The Arctic, Yonghuai Huang

Geodata Science Technical Reports

Atmospheric river (AR) takes a significant role in transporting warm moisture into the Arctic, which could further enhance the Arctic Amplification. This project aims to examine the surface conditions during selected cases of AR events that are detected by climate time series of Arctic AR index. Mono-level variables related to temperature, pressure, heat fluxes and wind speed of fourteen AR events were analyzed using the MERRA-2 derived Arctic AR index, and results were compared with the detected AR basins. Results of MERRA-2 data show that AR basins detected by both Integrated Water Vapor (IWV) and Integrated water Vapor Transport (IVT) …

Development Of A Custom Tendon Explant Frame Compatible With Reflectance Quantitative Polarized Light Imaging, Matthew Riak, Lila Dickstein

Mechanical Engineering and Materials Science Independent Study

Tendons and ligaments are collagenous tissues in the body which attenuate load. Reflectance quantitative polarized light imaging (rQPLI) is being developed to combat some of the issues present in many of the current imaging modalities used to study tendons and ligaments. To establish its utility in continuous monitoring of tendon healing, rQPLI will be used to monitor a tendon explant defect over a four week period in both normal and super healer mice strains. In this study, we discuss fabrication of a custom frame built to exert a constant force on tendon explants for these imaging studies. Additionally, the frame …

Ultrasonic Droplet Generation Of Phase Change Materials, Angelo Hawa

Mechanical Engineering and Materials Science Independent Study

Droplet-on-demand (DOD) generation is a widely studied phenomenon with useful applications across many fields in engineering. While some devices incorporate thermal or electrical aspects to induce droplet ejection, this report details the use of ultrasonic waves emitted by a piezoelectric transducer. An existing experimental setup to eject and visualize droplets was modified to incorporate phase change materials, such as wax. Simulations using COMSOL Multiphysics indicated a desired frequency range of 120 kHz to 140 kHz for a liquid layer height of 4 mm to 12 mm. However, ejection ultimately occurred briefly at an operating frequency of 178 kHz. The ejected …

A Mathematical Model For Transport And Growth Of Microbes In Unsaturated Porous Soil, Harihar Khanal, Andrei Ludu, Ramesh Chandra Timsina, Kedar Nath Uprety

Publications

In this work, we develop a mathematical model for transport and growth of microbes by natural (rain) water infiltration and flow through unsaturated porous soil along the vertical direction under gravity and capillarity by coupling a system of advection diffusion equations (for concentration of microbes and their growth-limiting substrate) with the Richards equation. (e model takes into consideration several major physical, chemical, and biological mechanisms. (e resulting coupled system of PDEs together with their boundary conditions is highly nonlinear and complicated to solve analytically. We present both a partial analytic approach towards solving the nonlinear system and finding the main …

Acetyl-L-Carnitine Protects Against Lps Induced Depression Via Ppar-Γ Induced Inhibition Of Nf-Κb/Nlrp3 Pathway, Amna Samin, Lina Tariq Al Kury, Muhammad Imran Khan, Shabir Hussain, Abdullah Alattar, Reem Alshaman, Fawad Ali Shah, Muhammad Aamir, Shupeng Li

All Works

Introduction Major depressive disorder (MDD) is a debilitating human health status characterized by mood swings and high suicidal attempts. Several studies have reported the role of neuroinflammation in MMD, yet the efficacy of natural drug substances on neuroinflammation-associated depression needs to be further investigated. The present study demonstrated the neuroprotective effects of Acetyl-L- carnitine (ALC) alone or in combination with caffeic acid phenethyl ester (CAPE) on lipopolysaccharide (LPS) induced neuro-inflammation, depression, and anxiety-like behavior. Material and methods Male Sprague Dawley (SD) rats were used to explore the relative effects of ALC and the mechanistic interplay of the peroxisome proliferator-activated receptors …