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Precision Agriculture - An accurate and robust strawberry flower representation and detection scheme is a key step to enable the reliable forecasting of fruit yield for use in precision... 相似文献
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The co‐culture of juvenile sea cucumber Holothuria scabra (Jaeger), or ‘sandfish’, with juvenile blue shrimp Litopenaeus stylirostris (Stimpson) was tested by growing groups in co‐culture and monoculture for 3 weeks in tanks with enriched sand substratum. Feed was supplied on trays, accessible only to shrimp. Survival of shrimp and sandfish was high in all treatments (73–100%). Growth of shrimp did not differ between monoculture and co‐culture, but sandfish grew significantly slower in co‐culture (P=0.03), although their sand burying and surface foraging were apparently unaffected by shrimp (P=0.76). However, shrimp increased the levels of total ammonia‐N in tanks, which related inversely with sandfish growth (P=0.04). Conversely, sandfish did not appear to lower the water quality for shrimp culture. While sandfish bioturbate sediments and eat organic deposits, the juveniles did not significantly reduce the organic content of sand in tanks. Co‐culturing juveniles of the two species in earthen ponds appears feasible, with no detriment to shrimp production, presenting a cost‐effective method for growing sandfish to larger sizes for restocking. These findings underpin further studies to test the viability of commercial co‐culture of sandfish with blue shrimp at later stages in the production cycle of shrimp. 相似文献
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Baggott D Casartelli A Fraisse F Manavella C Marteau R Rehbein S Wiedemann M Yoon S 《The Veterinary record》2011,168(9):241
On five commercial cattle rearing sites across Europe, a total of 802 young cattle at high risk of developing bovine respiratory disease (BRD) associated with the bacterial pathogens Mannheimia haemolytica or Pasteurella multocida and/or Mycoplasma bovis were enrolled into a multicentre, controlled field trial. Half were treated with a single dose of gamithromycin at 6 mg/kg bodyweight by subcutaneous injection and half received an injection of a saline placebo as the control. All animals were observed daily for 14 days for signs of BRD as defined by set criteria. The proportion of metaphylactic preventive treatment successes, defined as animals surviving to day 14 without signs of BRD, in the gamithromycin-treated group (86 per cent) was significantly (P=0.0012) higher than in the saline-treated controls (61 per cent). Morbidity among the treated animals was reduced by 64 per cent compared with the controls. 相似文献
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Quercetin 3-O-alpha-L-arabinopyranoside (1) was isolated from the aerial parts of Alchemilla xanthochlora and characterized by spectroscopic analysis. 相似文献
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Major dicaffeoylquinic acids from Artemisia vulgaris. 总被引：1，自引：0，他引：1
The two major caffeoylquinic acids, 3,5-di-O-caffeoylquinic acid and 1,5-di-O-caffeoylquinic acid, were new-isolated from the flowering tops of Artemisia vulgaris (yield 2.0% and 0.3% on dry weight, respectively) and characterized by spectroscopic analysis. 相似文献
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Luteolin 3'-O-beta-D-glucuronide (1) was isolated from the leaves of Melissa officinalis subsp. officinalis and characterized by spectroscopic analysis. 相似文献
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The qualitative and quantitative composition of the main aromatic and polyphenolic constituents of infusion from Chamaemelum nobile flowers was examined. The camomile tea contained a large amount of polyphenolic compounds (340 mg/l), the most important being chamaemeloside (155 mg/l). Only traces of essential oil were recovered in tea (7 mg/l). 相似文献
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