نتایج جستجو برای: mechanized seeding

تعداد نتایج: 11270  

Journal: :Biomaterials 2004
W T Godbey Stacey B S Hindy Matthew E Sherman Anthony Atala

A novel rotor was constructed to allow for the seeding of porous scaffolds via centrifugal force. Using cell seeding times of 10 min, this method placed significantly (roughly 3-fold) more cells into poly(glycolic acid) scaffolds than 24 h of spinner flask seeding or static seeding. There were no significant differences in the mitochondrial activity per cell between the 3 seeding methods. Cell ...

Journal: :Rangeland Ecology & Management 2023

Ecological restoration of rangelands using wild-collected seeds can be challenging due to low seed quality, inconvenient anatomy, and poor plant establishment. In North America, the half-shrub winterfat (Krascheninnikovia lanata) is a valuable protein-rich forage for wildlife livestock. Seeds this species are contained in one-seeded fruits enclosed four fluffy, silky bracts. While removed from ...

This study aimed to evaluate the efficiency of energy consumption and economic analysis of different watermelon cultivation systems in Fars Province of Iran. Watermelon production systems were classified into five systems, namely, custom tillage (group 1), conservation tillage (group 2), traditional planting (group3), semi mechanized planting (group 4), and mechanized planting (group 5). Data w...

ژورنال: علوم آب و خاک 2001
کرمی, عزت ‌الله, آزادی, حسین ,

Cooperative have always been considered institutions capable of solving major problems in the process of development in different countries. These institutions has evolved along with theories of development from government dependent organization to independent, people centered with the objective of being equal-opportunity systems for all members in order to be responsive to current goals of dev...

Journal: :تحقیقات مهندسی کشاورزی 0
مصطفی خجسته نژند دانشجوی کارشناسی ارشد دانشکده مهندسی و فناوری کشاورزی دانشگاه تهران محمود امید دانشیار دانشکده مهندسی و فناوری کشاورزی دانشگاه تهران احمد طباطبایی فر استاد دانشکده مهندسی و فناوری کشاورزی دانشگاه تهران

physical characteristics of agricultural products are the most important parameters in the design of grading, conveying, processing and packaging systems. among these physical characteristics, volume, mass, projected area and center of gravity are the most important for sizing systems. in this study, the segmentation method was used to estimate lemon volume. a total of 50 randomly selected lemo...

کرمی, عزت ‌الله, آزادی, حسین ,

Cooperative have always been considered institutions capable of solving major problems in the process of development in different countries. These institutions has evolved along with theories of development from government dependent organization to independent, people centered with the objective of being equal-opportunity systems for all members in order to be responsive to current goals of dev...

Journal: :international journal of advanced biological and biomedical research 2014
habibollah ranjbar mehrdad mansouri mahmood reza salar afraciab ala

rapeseed as one the most crops is the basic needs of human feeding in order to produce oil. a field experiment was conducted to study the effects of different tillage system, seeding method and rates on yield and its components, as well as, seed oil percentage of rapeseed (brassica napus l. cv. hyola-401) during 2011-12 growing season at rice research institute of iran-department of mazandaran ...

2013
LULIN XUE AKIHIRO HASHIMOTO MASATAKA MURAKAMI DANIEL BREED DEREK BLESTRUD

A silver iodide (AgI) cloud-seeding parameterization has been implemented into the Thompson microphysics scheme of the Weather Research and Forecasting model to investigate glaciogenic cloudseeding effects. The sensitivity of the parameterization to meteorological conditions, cloud properties, and seeding rates was examined by simulating two-dimensional idealized moist flow over a bell-shaped m...

2013
John T. A. Proctor J. Alan Sullivan

Greenhouse and field experiments with American ginseng (Panax quinquefolius L.) stratified seed sown at depths of 10 to 100 mm were carried out to determine effects of seeding depth on seedling emergence, growth and development and to calculate optimum seeding depth. The time to 50% seedling emergence (E50) in the field increased linearly from 17 d at 20 mm seeding depth to 42.5 d at 80 mm. See...

ژورنال: علوم آب و خاک 2000
ارزانی, احمد ,

Knowledge of the effects of row spacings and seeding rates on dual-purpose forage and seed production of an annual legume crop is essential for its proper agronomical exploitation. In this study, the effects of various row spacings and seeding rates on dry matter and seed yield in berseem clover (Trifolium alexandrinum L.) were evaluated in two consecutive years. The experimental design was a s...

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