227 Agricultural Engineering
University Park, PA 16802
(814)863-6844
FAX: (814)863-1031
jxl79@psu.edu
Degrees
Ph.D. in Biosystems Engineering, University of Manitoba, Canada (2005)
B.S., M.S., Ph.D. in Automotive Engineering, Jilin University, China
Teaching
B
E 306 - Engineering Principles of Agricultural Machines
ASM
420 - Off-Road Power Units
Research
*Machine development for biomass/bioenergy
*Biomaterial – mechanical system interactions
Membership and Certification in Professional Societies
Professional Engineer, Registered in Saskatchewan, Canada (2007)
Certification in Higher Education Teaching, University of Manitoba, Canada
(2007)
Member, American Society of Agricultural and Biological Engineers (2000)
Publications (since 2000)
Refereed Papers
Liu, J., D.A. Lobb, Y. Chen, and R. L.
Kushwaha. 2008. Steady-state models for the movement of soil and straw during
tillage with a single sweep. Transactions of the ASAE. (accepted)
Liu, J., Y. Chen, D. A. Lobb and R. L. Kushwaha. 2007. Soil−straw−tillage
tool interaction: field and soil bin study. Canadian Biosystems Engineering 49:
2.1-2.6.
Liu, J., D.A. Lobb, Y. Chen, and R. L.
Kushwaha. 2007. Effect of tillage speed and straw length on soil and straw
movement by a sweep. Soil and Tillage Research. (accepted)
Liu, J. and R. L. Kushwaha. 2006. Modeling soil profile
with a single sweep tool. CIGR E-Journal: Manuscript PM 06 008.
Vol. 8.
Chen, Y., J. Liu and J. Gratton. 2004. Engineering perspectives
of hemp plant, harvesting and processing in Canada – A review. Journal
of Industrial Hemp 9(2): 23-39.
Chen, Y., J. Gratton, and J. Liu. 2004. Power requirements
of hemp cutting and conditioning. Biosystems Engineering 87(4): 417-
424.
Chen, Y. and J. Liu. 2003. Development of a windrower for
dual-purpose hemp (cannabis sativa). Canadian Biosystems Engineering 45:
2.1-2.7.
Liu, J. and Y. Chen. 2000. Drying rate of hemp conditioned
with a forage conditioner. Canadian Agricultural Engineering 42(4):
201-204.
Book Chapter
Kushwaha, R.L. and J. Liu. 2005. Farm and Construction Equipment.
In The Handbook of Lubrication and Tribology, Volume I: Application
and Maintenance, 2nd edition. ed. G.E. Totten, 21.1-21.18. Boca
Raton, FL: CRC press.
Conference Papers
Liu, J. and R.L. Kushwaha. 2007. A mathematical model for
sub-soil stress estimation using a smooth steel roller for landmine neutralization.
ASABE Paper No. 071126. St. Joseph, MI: ASABE.
Liu, J. and R.L. Kushwaha. 2007. Dynamic interaction of
soil and a steel roller for landmine neutralization. Proc. of the Joint
North America, Asia-Pacific ISTVS Conference and Annual Meeting of Japanese
Society for Terramechanics, June 23-26, 2007, Fairbanks, Alaska, USA.
Liu, J. and R.L. Kushwaha. 2006. Force profile in subsoil
due to human locomotion. 10th European Conference of the ISTVS. Budapest,
Hungary, Oct. 1-7, 2006.
Liu, J. and R.L. Kushwaha. 2006. Modeling soil redistribution
by multiple sweeps. CIGR World Congress. Bunn, Germany, September 3-7, 2006.
Liu, J. and R.L. Kushwaha. 2006. Investigating dynamic interaction
of soil and mechanical landmine neutralization devices. ASABE Paper No. 061185.
St. Joseph, MI: ASABE.
Liu, J. and R.L. Kushwaha. 2006. Dynamic Properties of Soil
and a Smooth Surface Roller Interaction. 2006 CSBE/ASABE North Central Inter
Sectional Meeting. Paper No. MBSK 06-102. Saskatoon, Saskatchewan, October
5-7, 2006.
Liu, J. and R. L. Kushwaha. 2005. Study of soil profile
by a single sweep. CSAE Paper No. 05-060. Winnipeg, MB: Canada.
Liu, J. and R. L. Kushwaha. 2005. Modeling of soil redistribution
by sweeps. ASABE Paper No. 051024. St. Joseph, MI: ASABE.
Liu, J., D. A. Lobb, Y. Chen, and R. L. Kushwaha. 2004.
Modeling soil movement by a single sweep tool. CIGR Paper No. 40-072A,Beijing:
China.
Liu, J., Y. Chen, D. A. Lobb, and R. L. Kushwaha. 2004.
Modeling straw incorporation by a single sweep tool. CIGR Paper No. 40-070A, Beijing:
China.
Liu, J., R. L. Kushwaha, D. A. Lobb and Y. Chen. 2004. Steady-state
models of soil movement during tillage. CIGR Paper No. 40-071A, Beijing:
China.
Liu, J., Y. Chen, and D. A. Lobb. 2004. Experimental study
of tillage tool, soil, and straw interactions. ASAE Paper No. 041019. St.
Joseph, MI: ASAE.
Liu, J., Y. Chen and D. A. Lobb. 2002. Innovative design
features of a soil-bin to facilitate research on soil−tool interaction.
ASAE Paper-021136. St. Joseph, MI: ASAE.
Liu, J., Y. Chen and D. A. Lobb. 2002. Design features of
a high-speed soil-bin to facilitate research on soil-tillage tool kinematics. 45th
Annual Meeting of Manitoba Society of Soil Science, Feb. 6, 2002, Winnipeg,
Manitoba, Canada.
Chen, Y., J. Liu, and J. L. Gratton. 2002. Development of
a hemp windrower and an on-field fibre-processing unit.AgFibe 2002 Conference
and Exhibition. November 13-15, 2002, Winnipeg, Manitoba, Canada.
Liu, J. and Y. Chen. 2000. Experimental investigation of a
forage conditioner for hemp conditioning. CSAE/SCGR Paper
No. AFL125, Agri-Food 2000: A joint conference of the CSAE/SCGR
with Agricultural Institute of Canada, Canadian Institute of Food Science & Technology,
and Flax Council of Canada, July 15-19, 2000 Winnipeg, Manitoba.
