Zobrazeno 1 - 10
of 103
pro vyhledávání: '"D.H. Willits"'
Autor:
Nancy C. Mingis, Paul V. Nelson, Mary M. Peet, Mary A. Depa, D.H. Willits, David A. Dickey, Carl E. Niedziela
Publikováno v:
HortScience. 53:73-77
The effect of CO2 concentration (330 and 675 μL·L−1) and photosynthetic photon flux (PPF) (mean daily peaks of 550–1400 μmol·m−2·s−1) on total mineral contents in shoots was studied in chrysanthemum [Dendranthema ×grandiflorum (Ramat) K
Publikováno v:
Transactions of the ASABE. 54:1893-1904
Due to concerns about the negative environmental impacts of ammonia (NH3), the EPA may soon regulate NH3 emissions from livestock operations, including waste piles. This would require knowledge of NH3 emission rates, but there are very few field-scal
Publikováno v:
Aquacultural Engineering. 41:1-13
A mechanistic model was developed to describe the thermal behavior of an indoor raceway system with an inflated double polyethylene cover. The model describes the heat balances of the two covers, the inside air, the water in the raceway and the soil
Autor:
S. Li, D.H. Willits
Publikováno v:
Biosystems Engineering. 101:69-77
The cooling performance of a low-pressure (405 kPa working pressure) and a high-pressure fogging system (6.89 MPa) was evaluated. Experiments were conducted in two empty, naturally ventilated greenhouses under summer conditions for a period of about
Autor:
D.H. Willits, S. Li
Publikováno v:
Transactions of the ASABE. 51:1735-1746
A two-dimensional thermal model was developed to investigate the thermal stratification in fan-ventilated greenhouses. Model inputs include outside weather (air temperature, humidity, and solar radiation), geometric parameters of crop rows and leaf a
Autor:
S. Li, D.H. Willits
Publikováno v:
Transactions of the ASABE. 51:1443-1448
Experiments were performed to investigate air velocity and vertical air temperature distributions in a fan-ventilated greenhouse. The effects of ventilation rate and canopy size on the allocation of airflow between canopy and non-canopy areas were ex
Publikováno v:
Acta Horticulturae. :393-400
Autor:
D.H. Willits
Publikováno v:
Acta Horticulturae. :83-96
Publikováno v:
Acta Horticulturae. :73-82
Publikováno v:
Water Science and Technology. 50:77-82
An integrated system has been developed to recycle waste organics and treated wastewater from a swine farm to make value-added products and to protect the environment from potential contamination. The farm is a farrow-to-wean swine operation with app