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Friday, April 1, 2022
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9:00 AM
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10:00 AM
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Department of Estuarine and Ocean Sciences MS Thesis Defense by Nicholas Uline
- Location: > See description for location
- Contact: > See Description for contact information
- Description: The School for Marine Science and Technology
Department of Estuarine and Ocean Sciences
Master's Thesis Defense Announcement
"Seasonal carbon and nitrogen mineralization in sediments receiving bio-deposition from oyster aquaculture in shallow temperate estuaries"
By
Nicholas Uline
Advisor
Brian Howes, School for Marine Science and Technology, University of Massachusetts Dartmouth
Committee
Miles Sundermeyer, University of Massachusetts Dartmouth
David Schlezinger, University of Massachusetts Dartmouth
Craig Taylor, Woods Hole Oceanographic Institution
Friday, April 1, 2022
9:00 am to 10:00 am
SMAST East Rooms 101/102
New Bedford, MA
and via Zoom
Abstract:
Over the past 80 years, nitrogen (N) enrichment has been increasing with human population and shifts in land use near temperate coastal systems. Managers currently seek new infrastructure tools to control N while also improve marine habitat. Recently, the use of intensive aquaculture has been proposed, but few quantitative studies integrate both the mechanisms and extent that bivalves mitigate the impact of nutrient enrichment in general. Specifically, in New England’s coastal estuaries, oyster growth and filtration are well known, however, biodeposition from active feeding bivalves has been shown to also
modify the benthic-pelagic coupling of carbon (C) and N. The present study investigated the seasonal response of C and N cycling in sediments receiving labile organic matter through biodeposits from suspended oyster aquaculture, Crassostrea virginica, in two temperate estuaries. In addition to field measurements of sediment-water column exchange of oxygen and N, a long-term
sediment incubation was conducted over 351 days, where sediments received daily additions of field collected biodeposits for the length of the growth season (208 days). Further, a separate experiment incubated only the biodeposits to directly assess the decay rate at a constant temperature. The overall results showed similar seasonal trends in both field and long-term laboratory sediment
incubations, with temperature being the driving force in the annual pattern of C and N mineralization. Results indicated 45 – 65 % of C and 28 – 33 % of N in biodeposits were remineralized, including N loss through denitrification. The isolated biodeposits had a half-life for labile organic C of 11.25 – 15.92 days. Through the impact of oyster biodeposition, seasonal changes in temperature
appear to effect the volatility of mineralization rates and the biogeochemical cycle of sediments. Especially when eutrophication is less pronounced, C and N deposited through the summer continues releasing to the water column during cooler winter periods.
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Join Zoom Meeting
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Meeting ID: 977 2332 6862
Passcode: 636005
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For additional information, please contact Sue Silva at s1silva@umassd.edu.
- Topical Areas: School for Marine Sciences and Technology, SMAST Seminar Series
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2:00 PM
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3:00 PM
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Mechanical Engineering (MNE) Seminar by Sarah Dulac and Md. Faiyaz Jamil
- Location: Charlton College of Business, Room 115,
, 285 Old Westport Road, Dartmouth, MA
- Contact: Mechanical Engineering Department
- Description: Mechanical Engineering (MNE) SEMINAR
DATE:
April 1, 2022
TIME:
2:00 p.m. - 3:00 p.m.
LOCATION:
Charlton College of Business (CCB), Room 115
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SPEAKER #1:
Sarah Dulac, MS student in Mechanical Engineering (Advisor: Dr. Banafsheh Seyedaghazadeh)
TOPIC:
Harbor Seal Whisker Inspires the Study of Flow-Induced Vibration Based Underwater Sensors
ABSTRACT:
Aquatic bodies, such as a fish, leave behind different footprints or waterborne disturbances that consist of trails of flow vortices with a complex shedding frequency content. Harbor seals remarkably accomplish tracking their prey using their whiskers, functioning as a sensor. They possess the ability to detect the waterborne disturbances through interaction of the surrounding wake flow of the left-behind footprint with their flexible whisker structure. When the major axis of the whisker geometry is aligned with the flow, lengthwise undulations of the whisker model break the spatial coherence of vortex formation in the wake of the whisker, which in turn minimize or eliminate self-induced vortex-induced vibration (VIV) of whisker. This unique orientation-sensitive feature of the whisker allows the seal to move forward at steady speed with small self-induced noise from VIV. While the vortex-induced vibration and wake flow dynamics behind harbor seal whisker models are well-studied in the literature, their interaction with the oncoming vortex flow from upstream hydrodynamic objects is not well-understood and sparse in literature. In this study, water tunnel experiments are conducted to study flow-induced vibration response of an elastically mounted whisker model, when placed in the wake of an upstream circular cylinder in tandem arrangement.
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SPEAKER #2:
Md.Faiyaz Jamil, MS student in Mechanical Engineering (Advisor: Dr. Kihan Park)
TOPIC:
Targeted Drug Delivery with Light Actuated Micro Robots
ABSTRACT:
Over the last few years the development in micro robotics has enabled a vast field of active research and applicability of micro robots in biomedical engineering. Recent advancements in micro robotics suggest many pioneering works using light for fabrication as well as actuation at this tiny scale. One of the important applications of this could be but not limited to targeted drug delivery. In this project we are utilizing modular optical tweezers as a mean of control of the micro robots. Design and agility of the microbots in three-dimensional space without disrupting the bodily functions is critical for targeted drug delivery, and use of highly focused laser light allows it to be done in a less invasive manner with high accuracy and precision. Our state-of-the-art fabrication method, design process and robust mode of control open up new possibilities for micro tools that can perform complex therapeutic tasks effortlessly. Currently, we are developing a feedback control system to predict and correct our micro robot's path without any external input. On the grand scheme of this project we are hoping to perform targeted drug delivery in-vivo using our microbots and inspect the viability of our carrier design and performance by characterizing the effectiveness of targeted drug release.
For more information please contact Dr. Hangjian Ling, MNE Seminar Coordinator (hling1@umassd.edu).
All are welcome and light refreshments will be served.
Students taking MNE-500 are REQUIRED to attend! All other MNE students are encouraged to attend.
EAS students are encouraged to attend.
- Topical Areas: Faculty, General Public, Staff and Administrators, Students, Students, Graduate, Students, Undergraduate, University Community, College of Engineering, Mechanical Engineering, Lectures and Seminars
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4:00 PM
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5:00 PM
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Financial Aid Help Labs: Library 128
- Location: Claire T. Carney Library, Room 128
- Contact: > See Description for contact information
- Description: Financial Aid Services wants to remind all students to file their FAFSA! Join the Financial Aid Services Street Team for FA Help Labs on Wednesdays from 4 to 5 p.m. and Fridays from 4 to 5 p.m. in Library 128 for help filing your FAFSA and learning more about financial aid.
Contact Mark Yanni
myanni@umassd.edu
- Topical Areas: Students, Students, Graduate, Students, Law, Students, Undergraduate, Financial Aid
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3/15
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4/15
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Take the Campus Climate Survey
- Location: None
- Contact: > See Description for contact information
- Description: The purpose of the survey is to ensure UMass Dartmouth is a welcoming place for all types of students and a place where they want to complete their education and to recruit and retain extraordinary faculty and staff. The survey will be active from March 15 - April 15 2022.
Survey time is typically 30 minutes or less and you will have a chance to win an Amazon gift card, UMD Dollars, or UMassD gear!
Campus Climate Study Committee Chairs:
David A. Gomes
508-999-8192
david.gomes.eeo@umassd.edu
Pauline Entin, PhD
508-999-8352
pentin@umassd.edu
- Link: https://www.umassd.edu/climate/
- Topical Areas: Faculty, SMAST, Staff and Administrators, Students, Students, Graduate, Students, Law, Students, Undergraduate, University Community, University Marketing, _Charlton College of Business, College of Arts and Sciences, College of Engineering, College of Visual and Performing Arts, Academic Resource Center, Center for Women, Gender, and Sexuality, Fredrick Douglass Unity House, Labor Education Center, Student Affairs, Office of Diversity, Equity & Inclusion, CIE: Center for Innovation & Entrepreneurship, Center for Access & Success
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3/23
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4/20
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Online Teaching and Learning Strategies
- Location: Online
- Contact: CITS Instructional Development
- Description: A rigorous four-week, fully online certification course that introduces faculty to the current research and best practices for online teaching and learning. Using their own discipline-specific course materials for activities, faculty will work independently, collaboratively with peers from across campus, and with Instructional Designers to design and build one unit of online instruction in a myCourses site. This unit will meet the Quality Online Course Review Rubric criteria and be a model that faculty can reference and replicate as they continue to develop their upcoming fully online course(s).
- Topical Areas: Training, Workshop, audience: Faculty, audience: Staff
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8:00 AM
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8:30 AM
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10:00 AM
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12:30 PM
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College of Visual and Performing Arts Animation and Game Arts Spotlight Day
- Location: UMass Dartmouth Main Campus
, 285 Old Westport Road, Dartmouth, MA
- Contact: Admissions
- Description: Join us to get a hands on experience and learn more about Animation and Game Arts. We will have an info session, hands on VIP experience, campus tour and lunch.
- Link: https://apply.umassd.edu/register/?id=443475f6-7fb9-476a-8d74-0c03760df193
- Topical Areas: General Public, Students, Undergraduate, University Marketing, Art Education, Art History, Artisanry, College of Visual and Performing Arts, Fine Arts, Music, Visual Design, Undergraduate Admissions
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