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The effect of boron phosphate (BPO4) nanoparticles on the mechanical, thermal, and flame retardant properties of polypropylene (PP) and polyamide 6 (PA-6) fibers are investigated by tensile testing, thermogravimetric analysis (TGA), differential scanning calorimeter (DSC), and micro combustion calorimeter (MCC). The addition of BPO4 reduces the mechanical properties of the both PP and PA-6 fibers. According to the TGA results, the addition of BPO4 does not change the thermal behavior of PP fiber and slightly reduces the thermal stability of PA-6 fiber by about 30 °C. According to MCC results, the addition of BPO4 does not change the effective total heat evolution and heat release rate (HRR) peak for PP fibers. Although the inclusion of BPO4 does not change the total heat evolution of PA-6 fiber, it reduces the HRR peaks due to increase in barrier effect of char. 相似文献
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The effects of dietary mannan oligosaccharides (MOS) on the survival and growth of Astacus leptodactylus juveniles were evaluated. Experimental diets were prepared by using supplementation of 0 (Control), 1.5, 3.0, and 4.5 g MOS
kg−1 commercial trout larvae diet containing 43 g kg−1 protein and 15.74 g kg−1 lipid. A. leptodactylus juvenile with an average total length of 3.6 ± 0.46 cm (TL) and average weight of 1.25 ± 0.43 g was stocked in 0.2-m2 aquariums at a rate of 50 crayfish/m2 and reared for 60 days at 22.8°C. The experiment consisted of four treatments with three replicates each. Each aquarium contained
ten crayfish. Crayfish juvenile fed with 0, 1.5, 3.0, and 4.5 MOS attained 6.15 ± 0.49, 5.94 ± 0.29, 7.34 ± 0.39, and 5.94 ± 0.27 cm
final total length and 50, 56.67, 46.67, and 50% survival rates, respectively. Moreover, molting frequencies in 0, 1.5, 3.0,
and 4.5 g kg−1 MOS groups were detected as 44.44, 61.11, 83.33, and 38.88%, respectively. At the end of the experiment, a general enhanced
growth performance (P < 0.05) and feed conversion ratio were observed in crayfish fed on the diet containing 3.0 g kg−1. Crayfish juveniles fed with 3.0 g kg−1 MOS had the highest final length (7.34 ± 0.39 cm), although their survival was the lowest (46.67%) compared to other treatments
but not significant. Specific growth rates were significantly different (P < 0.05) among the treatment groups at the end of the 60-day experiment. There were no significant differences (P > 0.05) in percentage moisture, protein, and ash (wet-weight basis) in the tail meat of A. leptodactylus juvenile among treatments (diet) that averaged 82.3, 16.1, and 1.2%, respectively. However, lipid value was significantly
different among the diets P < 0.05), with values between 0.13 and 0.32. From the current results, it could be advised to use MOS at the rate of 3.0 g kg−1 in A. leptodactylus juvenile diets. 相似文献
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Bedir E Tatli II Khan RA Zhao J Takamatsu S Walker LA Goldman P Khan IA 《Journal of agricultural and food chemistry》2002,50(11):3150-3155
Three new compounds, (7E)-2beta,3alpha-dihydroxy-megastigm-7-en-9-one (1), 3-[5,7-dihydroxy-2-(4-methoxyphenyl)-4-oxo-4H-chromen-8-yl]-4-methoxybenzoic acid (2), and 4'-O-methyl myricetin 3-O-(6-O-alpha-L-rhamnopyranosyl)-beta-D-glucopyranoside (3), were isolated from Ginkgo biloba, together with 27 known compounds. The structures of the new compounds were determined primarily from 1D- and 2D-NMR analysis. The 4-O-methylbenzoic acid structural feature at C-8 in 2 is encountered for the first time. The antioxidant activities of 29 compounds isolated from Ginkgo biloba were evaluated on intracellular reactive oxygen species in HL-60 cells. It was found that quercetin, kampferol, and tamarixetin had antioxidant activity that was approximately 3-fold greater than that of their respective glycosides and also approximately 3-fold greater than that of a standard ascorbic acid with an IC(50) at maximum effectiveness. 相似文献
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F. Kantar E. Elkoca H. Ö&#;ütcü Ö. F. Algur 《Journal of Agronomy and Crop Science》2003,189(5):291-297
A study was conducted in order to investigate yields in relation to seed inoculation of chickpea (Cicer arietinum L. cv. Aziziye‐94) with eight Rhizobium leguminosarum ssp. ciceri strains isolated from wild chickpeas (C. anatolicum) of high altitudes (2000–2500 m) in comparison with standard bacterial culture, uninoculated control and mineral nitrogen fertilizer application in the growth room and in the field in 1999, 2000 and 2001 in Erzurum (29°55′N and 41°16′E at an altitude of 1850 m), Turkey.In the growth room trial, bacterial inoculations significantly increased shoot dry weight, N %, total N, N fixed and efficiency of symbiosis compared with the uninoculated control treatment depending on the strains. In the field trial, inoculations with HF 274 and HF 177 increased nodule dry weight, N %, chlorophyll, seed yield and total biomass yield depending on the strains, the lowest values being recorded in uninoculated plots. As an average of years, inoculation with HF 274, HF 177 and standard bacterial culture increased seed yields, respectively, by 23.3, 22.7 and 16.8 % over uninoculated control.In conclusion, rhizobial inoculation of chickpea with HF 274 and HF 177 strains isolated from wild chickpeas (C. anatolicum) of high altitudes may substitute costly N fertilizers in chickpea production even in cold highland areas such as Erzurum. 相似文献
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Aynur Ozbahce A. Fuat Tari Erdal Gönülal Necati Simsekli Huseyin Padem 《Archives of Agronomy and Soil Science》2013,59(5):615-626
In this study, the effects of different zeolite doses (Z0:0, Z3:30, Z6:60, Z9:90, and Z12:120 t ha?1) and water levels (I50: 0.50, I75: 0.75, and I100:1.00) on yield, quality, and nutrient absorption of common bean were evaluated under arid conditions in Karapinar Konya, Turkey, in 2011 and 2012. The experiment was carried out in a split-plot design with three replications. The results showed that in each treatment different doses of zeolite together with changes in the rate of irrigation levels effected yield and yield components. Water use efficiency was also affected by zeolite and irrigation treatments. The highest yields, 4777 and 4114 kg ha?1, respectively, were obtained from the Z9I100 application in 2011 and 2012. During the experimental years, water consumptions at the same treatment were determined 451 and 468 mm, respectively. In addition to this, zeolite treatments affected the contents of N, K, Zn, Mn, and Cu in leaf samples (p < 0.05). These nutrient levels increased with raising zeolite doses. 相似文献
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Ozlem Yesil-Celiktas Canan Sevimli Erdal Bedir Fazilet Vardar-Sukan 《Plant foods for human nutrition (Dordrecht, Netherlands)》2010,65(2):158-163
The leaves of Rosmarinus officinalis harvested from three different locations of Turkey were extracted by both methanolic and supercritical CO2 extraction. Subsequently, six extracts and the active compounds, carnosic acid, and rosmarinic acid were applied to various
human cancer cell lines including NCI-H82 (human, small cell lung, carcinoma), DU-145 (human, prostate, carcinoma), Hep-3B
(human, black, liver, carcinoma, hepatocellular), K-562 (human chronic myeloid leukemia), MCF-7 (human, breast, adenocarcinoma),
PC-3 (human, prostate, adenocarcinoma) and MDA-MB-231 (human, breast, adenocarcinoma) by MTT assay. Supercritical CO2 extracts had superior antiproliferative effect compared to the soxhlet extracts. Although the extracts exhibited various
cytotoxic effects against different cell lines, comparatively low IC50 values ranging between 12.50 and 47.55 μg/ml were attained against K-562, being the most sensitive cell line. Moreover, carnosic
acid caused the lowest cell viability with values ranging from 13 to 30 % at a concentration of 19 μM after 48 h of treatments,
resulting in superior antiproliferative effect. Rosemary extract is a potential candidate to be included in the anti-cancer
diet with pre-determined doses avoiding toxicity. 相似文献
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Sekip Erdal Mehmet Pamukcu Mustafa Curek Mehmet Kocaturk Ozlem Yilmaz Dogu 《Archives of Agronomy and Soil Science》2016,62(11):1487-1495
Maize (Zea mays L.) intercropped with soybean (Glycine max L.) may be a viable option to improve the quality of the silage. In this study, maize and soybean intercropped in different numbers of rows and their monocropping equivalents were tested to determine the best intercropping system in a crop rotation following winter wheat. The treatments were monoculture maize (M), monoculture soybean (S), 75% maize + 25% soybean (3M:1S), 50% maize + 50% soybean (2M:2S) and 25% maize + 75% soybean (1M:3S). The experiment was laid out in a randomized complete block design with three replications in 2011 and 2012 in Antalya, Turkey. Highest fresh forage yields were obtained from maize (53.3 t ha?1) and 3M:1S (62.8 t ha?1) treatments in 2011 and 2012, respectively. Maize treatment had highest dry matter yield (21.1 and 22.0 t ha?1) in both years. Quality analysis of silage revealed that 3M:1S was superior to maize treatment in terms of dry matter (25.23%), crude protein (7.31%), crude fiber (18.27%), neutral detergent fiber (42.56%), acid detergent fiber (25.81%), lactic acid (4.71%) and acetic acid (4.05%). In conclusion, 3M:1S row intercropped production system was a better alternative for silage to monoculture maize in a crop rotation following winter wheat. 相似文献
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Precision Agriculture - Specialty crops, such as apples, are vulnerable to insects and pathogens, and require higher pesticide input than row crops, a significant fraction of which is off-target... 相似文献
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