Biology 402Senior Seminar

Spring 2006

A Comparison of Bacterial Reduction between

Antiseptics

Studying E. coli strain DHα5

Senior Thesis

Minh Nguyen

Dr. Hartman, Dr. Olney

Saint Martin’s University

Results Of Disinfectant Sprays After 48 Hour Incubation

Clorox Spray Lysol Spray

Safeway Spray Water

Beth Layton

Methods General Daily Routine• Workout Location: Tae Kwon

Do Academy in Puyallup WA.

• Subjects: 14 total volunteers.

• Workout duration: 60 minutes for a 5 day period.

• Hydration: First week-water consumption and the second week, Gatorade consumption.•

• Participants are required to consumed the given beverage.

• Then be weighed • Workout for a 60 minute

period. • At the end of the class, weigh

once more.• Difference in weight will

determine sweat loss.

Kyle Samples

Comparing Black bear damage on conifer trees in Washington

State Capitol Forest

By:Brad Beerbower

Methods

Separate fish randomly in to 3 tanks (each tank with 20 fish)↓

Let fish acclimate to new tank for one day ↓

Weigh food before feeding to the fish. ↓

1 g Feed every 12 hrs for 5 consecutive days↓

Clean the tanks every 24 hrs before feeding them again.↓

Collect unnecessary food and fecal material.

Ruby Lopez

FLESH FLY(Sarcophaga sp.)

• Carrion-feeding flies

• Approx. 2600 known species

• Worldwide

• Decomposition

• Forensics Science – Time of death

http://www.uknature.co.uk/FleshFly-info.htmlSothear Sam

Hypothesis• Those with acrylic nails

will harbor more bacteria underneath their nails than females with native nails (unwashed and washed).

• Image references:http://phuket-beautymassage.com/nailpics.html

http://www.brazilnaturalnails.com/news.html

Pelenita Tuupo

An Investigation of the Amounts of Bacteria on Employees’ HandsSample• 50 total participants

– 40 grocery store employees

– 10 Saint Martin’s students

Occupations• Cashier• Produce/Bakery Clerk• Deli Clerk

• Meat/Seafood Clerk

• Student

Katie Illes

Oral Bacteria

http://www.stchas.edu/faculty/zfitzgerald/lactobacillus.jpg http://www.dokidoki.ne.jp/home2/saishika/mutans1L.jpg

Lactobacillus Streptococcus mutans

•Reside in oral flora

•Adhere to Enamel and Ingest Sugars

•Cause plaque

•Initiate cavitiesChris Leyster

Components of Study

ToothpasteStreptococcus mutans Lactobacillus

Total

24 Hours 72 Hours 24 Hours 72 Hours

Aquafresh 8 8 8 8 32

Arm n’ Hammer 8 8 8 8 32

Crest 8 8 8 8 32

Colgate 8 8 8 8 32

Toms 8 8 8 8 32

Control (Water) 4 4 4 4 16

Total 44 44 44 44 176

Chris Leyster

24 Hour Zones of Inhibition on Lactobacillus

0

5

10

15

20

25

30

crest colgate aquafresh toms arm nhammer

Toothpastes

mm

Chris Leyster

Research Goal

The goal of this project was to ascertain the anti-microbial

power of common varieties of chewing gum. The two varieties tested were Orbit (cinnamon)

that is distributed by Wrigley Co. and Trident (original).

Carter Richards

ResultsFigure 1- Breakfast eaters vs. non-breakfast eaters in a sample of 20 college students. Mean differences between both testing days are

shown in this figure.

30%

50%

70%

90%

1 3 5 7 9 11 13 15 17 19

Student Number

Te

st

Pe

rce

nta

ge

Breakfast No breakfast

Rachael Schroll

Correlation of Coarse Woody Debris

Biomass and Tree Species Diversity within Coniferous

Forests of Western Washington

Rachel Wehr

COARSE WOODY DEBRIS: LOGS

Rachel Wehr

CORRELATION ANALYSIS

0

50

100

150

200

250

0 0.5 1 1.5

diversity index

CW

D b

iom

ass

young forest

mature forest

old growth forest

Correlation coefficients

Young r = -0.207 , P = 0.793

Mature r = -0.628 , P = 0.372

Old Growth r = 0.295 , P = 0.705Rachel Wehr

Oral hygiene habits and oral bacterial populations

A comparison of Lactobacillus and Streptococcus bacteria

Travis Ochsner

4/21/2006

Senior Seminar

Dr. Olney

Dr. Hartman

Hypothesis

• Excessive oral hygiene habits will decrease populations of Lactobacillus bacteria (Tomato juice broth pH 4) more drastically than Streptococcus bacteria (Brain-Heart infusion {BHI} broth pH 6.5).

• Factors- hygiene, bacterial growth, and interaction.

Travis Ochsner

Senior Seminar Project

Chagas Disease

Sara Trejo

Dr. Margaret Olney and Dr. Mary Jo Hartman

Saint Martin’s University 2006

Hypothesis Statement• Polymerase Chain Reaction (PCR) can be developed for use as a

specific and sensitive diagnostic tool for Chagas Disease.

• First step towards development is the evaluation of PCR primer sets for specificity and sensitivity.

Sara Trejo

CHPPM-West, Fort Lewis.Jose Avila

Comparison of bacterial growth in the oral cavity between

tobacco consumers and non–tobacco usersKrystle Antolin

Range of Motion

• Range of Motion (ROM) is the complete movement of the joint through flexion and extension.

• Normal ROM: extension, 0 degrees and flexion is 135 degrees.

Courtney Rogers

Materials• Active Ankles

brace:

http://www.wisdomking.com/product55238.html

http://www.activeankle.com/

• Lace-up Ankle brace:

Goniometer:Goniometer: http://www.orthobionics.com/ankle/pages/laceup_ankle.htm

Randi-Lee Rezents

Foot Care : A Study Examining The Occurrence of Corns & Calluses in

Males and Females

By Ann Marie McCanickSenior Seminar

May 3, 2006Dr. Hartman & Dr.

Olney