Mechanical Quality Control
Resume:
SESHUMANI VORREY
******@*****.*** (918)
PROFILE
Accomplished research chemist with eight years of experience in various
manufacturing processes. Proven track record of solving technical problems
product modification resulting in reducing cost. Strong technical and
problem solving skills and highly detail oriented. Flexible and co-
operative professional performs well under pressure in fast paced
environments. Follow projects from concepts to completion.
WORK EXPERIENCE
Roadscience,Ok
Jun2013-Present
Formulation chemist working on product development and analysis.Organic
synthesis of various emulsifiers used in different road applications.
CP Kelco Okmulgee,OK
Oct 2011 -May2013
ICP Analysis of finished product along with method validation setting up
the instruments and developing new digestion techniques for faster and
better results.
Improved the method for ICP analysis cutting down the time from 4days to
five hours with good repeatability.
OSU Tulsa, OK
Sep 2009- Aug 2011
Research Associate
Conducting research involved in various polymer composites. A remediation
to treat ~3 tone foam. Containing fire retardant material leaching into
landfill. Surface treatment involving recycled rubber tire composites using
polyurethane foam for aerospace, defense, and infrastructure applications,
surface treatment of waste carpet fibers using various organic inorganic
solvents to enhance the compatibility between matrix and fibers to obtain
good mechanical properties of the structural properties than the
commercially available composites of similar price range. Made sure to
comply with the hazardous waste disposal regulations. Responsible for
purchasing equipment and supplies. Coordinated and got quotes from various
testing laboratories as well as qualified their testing capabilities.
Umicore Autocat Inc, Tulsa, OK Sep 2007 -
Aug 2009
Chemist
Worked on Inorganic metal oxide and zeolite materials synthesis,
characterization and development of products such as Diesel Oxidation
Catalyst (DOC), Selective Catalytic Reduction (SCR). Usage of
characterization techniques such as SEM, TPR, FTIR, XRD, TGA
. Improved adhesion process and changed a double coating process to
single, cutting down the cost and time to 50%
. Developed a process using a surfactant to improve the performance of
the catalyst, expected improvement from 60% to 80% effectiveness.
. Influences of particle size distribution obtained from slurries on
coating properties were studied.
. SEM technique in measuring coating thickness.
. Studies on slurry properties (pH, solids loading, particle size
distribution and rheology upon coating homogeneity and adherence to
metallic substrates
Perma-Fix Environmental, Tulsa, OK Sep
2005 - Aug 2007
Lab Manager
Maintained and monitored technical analytical laboratory quality program.
Created recipes for waste treatment analyses. Assured accuracy of data and
disseminated the results. Maintained an inventory of product QC test
samples. Responsible for troubleshooting and solved problems in the lab.
Made sure to comply with the hazardous waste disposal regulations.
Responsible for purchasing equipment and supplies Coordinated and got
quotes from various testing laboratories as well as qualified their testing
capabilities
Syntroleum Corporation, Tulsa, OK Sep 2003 -
Aug 2005
Lab Quality Control Specialist/Analytical Chemist
Maintained and monitored technical analytical laboratory quality program.
Control charts for GC calibration gases for the demonstration facility.
Tested product samples, assuring accuracy of data and disseminated results
to in-house customers. Maintaining an inventory of product QC test
samples. Reported incidences of questionable/erroneous data to analytical
supervisor for problem resolution. Controlled and documented samples sent
for outside analysis. Received and disseminated data from such testing and
shipment and receipt of products to and from outside customers and
preparing material for shipment. Maintained current inventory of products
and chemicals stored onsite at the technical center. Maintained MSDS for
each product and chemicals and interfacing with Syntrloeum personnel in
retrieving such product when required. Maintained analytical data on the
intranet. Shipment of hazardous materials both within US and world wide
with associated duties of precise classification, documentation packaging
and tracking. Consolidation of analytical data from all centers accessible
to everyone. Responsible for trouble shooting and solving problems in the
lab. Made sure to comply with the hazardous waste disposal regulations.
Responsible for purchasing equipment and supplies
Coordinated and got quotes from various testing laboratories as well as
qualified their testing capabilities
. Redesigned the quality test to determine product composition from
three hour to tem minute, allowing the production unit to quickly
modify the process
. Led training for all laboratory technicians
. Wrote training procedures for the product /gas chromatography and
distillation, ran tests as needed.
CP Kelco, Okmulgee, OK Oct 2003 - Feb
2004
Lab Technician
Worked with process engineering group in conducting various studies on Food
product Xanthan gum that included critical drying curves, moisture
analysis, viscosity measurements, density, particle size analysis, Milliken
filtration evaluation and interpretation of data.
. Changed instrument configuration to get desired data
2001 Aug- 2003 Dec., University of Tulsa Chemistry and Biochemistry
Department, Tulsa, OK
Position: Chemistry Research Assistant
. Ionic conductivity of polymer electrolytes confined in micro and
nanopores
. The mechanism and structural changes of the solid Peo (Polyethylene
Oxide) confined in pores .The study is done using FTIR technique. The
Glass transition temperatures of the polymer confined in pores is
studied using DSC (Differential scanning Calorimetry)
. Used AFM (Atomic Force Microscope) to collect images of polymer in
pores
1998 - 2001, Organic and Biochemical Research, Tromsoe, Norway
. Purification of Alcohol Dehydrogenase from Pig Liver Using Affinity
Chromatography
. Used Western blotting, Iso Electrophoresis Affinity Chromatography to
purify the enzyme.
. Synthesized 4-Pyrole benzidine using as ligand to purifying enzyme in
one step
1997-1998, United Nations Development Program, North East Africa, Eritrea
Position: High School Chemistry Instructor
. Revised curriculum and wrote procedures manuals for lab experiments
introducing salt and volumetric analysis for 11th grade students
EDUCATION
Master of Science (MS) in Chemistry May 2003, University of Tulsa, Tulsa OK
Thesis: Ionic Conduction of Solid Polymer Electrolytes Confined in Micro
and Nanopores
Master of Science (MSc) in Organic Chemistry, 1995, Osmania University,
Hyderabad, India
Bachelor of Science (BSc): 1992, Arts and Science College Warangal India
SKILLS
Instruments: AFM Atomic force Microscopy, FTIR Fourier transformation
infrared spectroscopy, AC Impedance Spectroscopy, DSC Differential scanning
calorimetry, XRD (X Ray Diffraction). HPLC, TLC
Gas Chromatography and Coulter 230 particle size Analyzer. NMR data
collection and interpretation.
Biochemical Techniques; SDS PAGE Electrophoresis, Iso Electric Focusing,
Protein Purification Techniques, Ion Chromatography, Gel
Filtration.Inductively coupled plasma ICP and Various ASTM methods and well
versed with all wet chemistry techniques.
Computer: Microsoft Word, Power Point, Excel, Microsoft publisher, chem.
Station, Spartan, NUTS, MINITAB, Chemstation
Languages Spoken: English, Telugu, Hindi, Tigrinia, Norwegian
PPRESENTATIONS / PUBLICATIONS
Bhadra, A., Seshumani, V., Vaidyanathan, R., and Singh, R. P., "Experi-
mental Study of the Mechanical Properties and Energy Absorption Char-
acteristic of Polyurethane Foam-Crumb Rubber Composites," Society for the
Advancement of Material and Process Engineering Conference, Seattle,
Washington, 2010.
Abhishek Jain, Seshumani Vorrey, and Raman P. Singh.,"Evaluation of sur-
face treatment methods to enhance the mechanical properties of composites
fabricated from waste carpet.", Society for the Advancement of Material and
Process Engineering Spring Technical Conference, Seattle, WA, 2010.
Mishra K., Vorrey S. and Singh R. P., "Using of POSS to enhance frac- ture
toughness of thermosetting resin, SAMPE Spring Technical conference,
Seattle, Washington, 2010.
Mishra K., Vorrey S. and Singh R. P., "Mechanical and Chemical Charac-
terization of POSS incorporated DGEB-A resin, Society for the Advancement
of Material and Process Engineering Spring Technical conference, Salt Lake
City, Utah, 2010.
Vorey, S., Teeters D., "Characterization of Polymer electrolytes confined
in Micro and nanopores," Presented at the SSI-14 International Conference
on Solid State Ionics Monterey, California. June 17-22, 2003.
Oral presentation of the above paper at the NSF Annual conference EPScor
Stillwater, OK 2003
Vorrey, S and Teeters, D., "Study of the Ion Conduction of Polymer
Electrolytes Confined in Micro and Nanopores," Electrochimica Acta, 48,
2137 (2003).
Enhanced Ionic Conduction in Polymer Electrolytes by confinement in
Nanoscale Pores[pic]
S. Vorrey D Teeters. Abs. 359, 205th Meeting, 2004 The Electrochemical
Society, Inc.
Vorrey, S., "Structural Influence of Chromogen in Enzymatic Assay of
Glucose," Indian Journal of Microbiology 1995
Rani, A.S., Vorrey, S., "A Spot Identification Of Completion Of Starch
Hydrolysis To Glucose," Indian Journal of Microbiology 1995
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