排序方式: 共有30条查询结果,搜索用时 15 毫秒
1.
María Celina Luján-Hidalgo Deisy Ermeth Gómez-Hernández Juan José Villalobos-Maldonado Miguel Abud-Archila Joaquín Adolfo Montes-Molina Samuel Enciso-Saenz 《Compost science & utilization》2017,25(2):95-101
The aim of this investigation was to determine the effect of vermicompost, vermiwash, and phosphate rock on plant, total phenols, flavonoids, and anti-oxidant activity in Piper auritum Kunth leaves. P. auritum plants were obtained from cuttings and were planted according to the Box-Behnken experimental design with three repetitions at the central point. The factors and levels were vermicompost (10, 20, and 30 g plant?1), vermiwash (5, 10, and 15 mL plant?1), and phosphate rock (1, 2, and 3 g plant?1). Plant growth parameters (plant height, stem diameter, leaves number) and chlorophyll content were measured 1 month after treatment applications. Total phenols, total flavonoids, and 1,1-diphenyl-2-picryl-hydrazyl radical scavenging activity was measured after 4 months. Vermicompost, vermiwash, and phosphate rock had no statistically significant effect on plant growth. Plant height, stem diameter, leaves number, chlorophyll, innermost number, fresh weight stem, fresh weight leaves, fresh weight root, dry weight stem, dry weight leaves, and dry weight root were not different among treatments. Total phenolic compounds were statistically affected for both vermiwash and phosphoric rock (p < 0.05) and the anti-oxidant activity decreased by vermicompost addition. The application of 15 mL plant?1 vermiwash, 1 g phosphate rock, and 20 g vermicompost plant?1 increased the total phenol content. 相似文献
2.
木百合是,静王花家族中分布最广泛的品种,木百合雌雄异株,这在帝王花家族中是很少见的。它的花期很长(从5月到12月),加上色彩丰富的树叶和苞叶,使之成为非常有吸引力的园林树种。在自然条件下,木百合能长到0.75m~2m的高度,适应从平原地区的暖冬气候到高山的冰雪霜冻天气,使得木百合成为园艺种植的主选品种。 相似文献
3.
Celina Y. Morimoto Monique N. Mayer Narinder Sidhu Rachel Bloomfield Cheryl L. Waldner 《Veterinary and comparative oncology》2020,18(2):199-205
Sources of residual setup error after image guidance include image localization accuracy, errors associated with image registration, and inability of some treatment couches to correct submillimeter translational errors and/or pitch and roll errors. The purpose of this experimental study was to measure setup error after image‐guided correction of the canine intracranial region, using a four degrees‐of‐freedom couch capable of 1 mm translational moves. Six cadaver dogs were positioned 45 times as for clinical treatment using a vacuum deformable body cushion, a customizable head cushion, a thermoplastic mask and an indexed maxillary plate with a dental mould. The location of five fiducial markers in the skull bones was compared between the reference position and after megavoltage (MV), kilovoltage (kV) and cone‐beam computed tomography (CBCT)‐guided correction using orthogonal kV images. The mean three‐dimensional distance vectors (3DDV) after MV, kV and CBCT‐guided correction were 1.7, 1.5 and 2.2 mm, respectively. All values were significantly different (P < .01). The 95th percentiles of the 3DDV after online MV, kV and CBCT‐guided correction were 2.8, 2.6 and 3.6 mm, respectively. Residual setup error in the clinical scenario examined was on the order of millimetres and should be considered when choosing PTV margins for image‐guided radiation therapy of the canine intracranial region. 相似文献
4.
Seventy-six rhizobial isolates belonging to four different genera were obtained from the root nodules of several legumes (Vicia sativa, Vicia faba, Medicago sativa, Melilotus sp., Glycine max and Lotus corniculatus). The action of five commonly used herbicides [2,4-dichlorophenoxyacetic acid (2,4-D), glyphosate (GF), dicamba, atrazine and metsulfuron-methyl] on the growth of rhizobial strains was assessed. Subsequently, GF and 2,4-D were tested in a minimum broth as C and energy sources for 20 tolerant strains. The ability of these strains to metabolize different carbon sources was studied in order to detect further differences among them. Tolerance of the bacteria to agrochemicals varied; 2,4-D and GF in solid medium inhibited and diminished growth, respectively, in slow-growing rhizobial strains. Among slow-growing strains we detected Bradyrhizobium sp. SJ140 that grew well in broth + GF as the sole C and energy source. No strain was found which could use 2,4-D as sole C source. The 20 strains studied exhibited different patterns of C sources utilization. Cluster analysis revealed three groups, corresponding to four genera of rhizobia: Rhizobium (group I), Sinorhizobium (group II) and Mesorhizobium–Bradyrhizobium (group III). On the basis of the results obtained on responses to herbicides and C sources utilization by the isolates investigated, it was possible to differentiate them at the level of strains. These results evidenced a considerable diversity in rhizobial populations that had not been previously described for Argentinean soils, and suggested a physiological potential to use natural and xenobiotic C sources. 相似文献
5.
Miguel Abud-Archila María Celina Luján-Hidalgo Jaeni Mibeth López-Pérez Josué Ordaz-Rivera Víctor Manuel Ruiz-Valdiviezo María Ángela Oliva-Llaven 《Compost science & utilization》2013,21(4):225-231
AbstractThe aim of this investigation was to determine the effect of vermicompost (V) and phosphate rock (PR) on blackberry (Rubus fruticosus L. agg.) plants inoculated with Glomus mosseae (Nicol. & Gerd.) Gerdemann & Trappe (AMF). Plant growth parameters, total phenol compounds and total flavonoids were evaluated on leaves. Anthocyanin contents, soluble solids (SS), pH, titratable acidity (TA) and SS/TA ratio was evaluated in blackberries fruits. Blackberry plants were obtained from cuttings from field plants, which were distributed in soil according to a randomized complete block design with three repetitions. Treatments were vermicompost (10?g plant?1), phosphate rock (1?g plant?1), Glomus mosseae (AMF), (1?g plant?1), PR + AMF, V + PR, V +AMF, V + PR+ AMF and control without any amended. Plant height and stem diameter were measured five months after treatments, while total phenols and total flavonoids in leaves were evaluated eight months later. Anthocyanins, SS, pH, and TA were determined in blackberry fruits ten months after. Plant height was not statistically affected (p≤0.05), although total phenol compounds were higher (21.1?mg g?1 dry plant) in the V+PR+AMF treatment, whereas the V + AMF treatment produced more dry plant total flavonoids (1.4?mg g?1), compared with control plants. Blackberries produced with the vermicompost treatment had more anthocyanins (9.54?mg g?1) than control plants. Soluble solids, pH and titratable acidity were not statistically (p≤0.05) affected by any treatment. 相似文献
6.
Daniel?F.?R.?Clearycleary@naturalis.nnm.nl" title="cleary@science.uva.nl cleary@naturalis.nnm.nl" itemprop="email" data-track="click" data-track-action="Email author" data-track-label="">Email author Martin?J.?Genner Timothy?J.?B.?Boyle Titiek?Setyawati Celina?D.?Angraeti Steph?B.?J.?Menken 《Landscape Ecology》2005,20(8):989-1001
A comprehensive understanding of variables associated with spatial differences in community composition is essential to explain
and predict biodiversity over landscape scales. In this study, spatial patterns of bird diversity in Central Kalimantan, Indonesia,
were examined and associated with local-scale (habitat structure and heterogeneity) and landscape-scale (logging, slope position
and elevation) environmental variables. Within the study area (c. 196 km2) local habitat structure and heterogeneity varied considerably, largely due to logging. In total 9747 individuals of 177
bird species were recorded. Akaike's information criterion (AIC) revealed that the best explanatory models of bird community
similarity and species richness included both local- and landscape-scale environmental variables. Important local-scale variables
included liana abundance, fern cover, sapling density, tree density, dead wood abundance and tree architecture, while important
landscape-scale variables were elevation, logging and slope position. Geographic distance between sampling sites was not significantly
associated with spatial variation in either species richness or similarity. These results indicate that deterministic environmental
processes, as opposed to dispersal-driven stochastic processes, primarily structure bird assemblages within the spatial scale
of this study and confirm that highly variable local habitat measures can be effective means of predicting landscape-scale
community patterns. 相似文献
7.
Almeida DE Nishimori CT Oriá AP Paula DP Nunes N Laus JL 《Veterinary ophthalmology》2008,11(3):170-176
Objective The aim of the present study was to evaluate the effects of nitrous oxide on IOP and pupillary diameter (PD) of dogs anesthetized with varying desflurane concentrations. Animals studied Twenty adult Mongrel dogs were used. Methods They were anesthetized with propofol (10 mg/kg, IV) and maintained with varying concentrations of desflurane (1.6, 1.4, and 1.2 MAC) diluted in 100% oxygen (G1) or in 70% nitrous oxide and 30% oxygen (G2) (30 mL/kg/min). IOP was measured by applanation tonometry and horizontal PD was taken with a caliper adjacent to the cornea. Mean arterial pressure (MAP), heart rate (HR), respiratory rate (RR), and end‐tidal CO2 (etCO2) were also measured. All parameters were measured at T0, T30, T45, and T60 time points. One‐way repeated measures anova and the t‐test were used to assess statistical differences (P < 0.05). Results T30, T45, and T60 IOP measures were within normal limits for both groups and IOP did not differ between groups at any time. There was a significant decrease in PD in G1 between T0 and T30, T45 and T60, and also between T30 and T60. PD did not differ between groups. All vital parameters were within normal limits throughout anesthesia. Conclusions Administration of nitrous oxide with desflurane results in maintenance of normal IOP and prevents a decrease in horizontal PD during anesthesia. Therefore, this may be a suitable protocol in dogs undergoing intraocular surgeries that require mydriasis and maintenance of normal IOP. 相似文献
8.
Celina Emiko OKAMOTO-OKUBO Renata Navarro CASSU Jean Guilherme Fernandes JOAQUIM Luciane dos REIS MESQUITA Sheila Canevese RAHAL Hugo S Salvador OLIVEIRA Regina TAKAHIRA Isadora ARRUDA Leandro MAIA Fernanda da CRUZ LANDIM Stelio Pacca Loureiro LUNA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(5):881
9.
Lopes PC Nunes N Paula DP Nishimori CT Guerrero PN Conceição ED 《Veterinary anaesthesia and analgesia》2008,35(3):228-231
ObjectiveTo establish the correlation between the bispectral index (BIS) and different rates of infusion of propofol in dogs.Study designProspective experimental trial.AnimalsEight adult dogs weighing 6–20 kg.MethodsEight animals underwent three treatments at intervals of 20 days. Propofol was used for induction of anesthesia (10 mg kg−1 IV), followed by a continuous rate infusion (CRI) at 0.2 mg kg−1 minute−1 (P2), 0.4 mg kg−1 minute−1 (P4) or 0.8 mg kg−1 minute−1 (P8) for 55 minutes. The BIS values were measured at 10, 20, 30, 40, and 50 minutes (T10, T20, T30, T40, and T50, respectively) after the CRI of propofol was started. Numeric data were submitted to analysis of variance followed by Tukey test (p < 0.05).ResultsThe BIS differed significantly among groups at T40, when P8 was lower than P2 and P4. At T50, P8 was lower than P2. The electromyographic activity (EMG) in P2 and P4 was higher than P8 at T40 and T50.ConclusionsAn increase in propofol infusion rates decreases the BIS values and EMG. 相似文献
10.
Attademo Andrés M. Peltzer Paola M. Lajmanovich Rafael C. Basso Agustín Junges Celina 《Water, air, and soil pollution》2014,225(3):1-9
Water, Air, &; Soil Pollution - We determined basal levels of cholinesterase (ChE) and carboxylesterase (CbEs; two substrates: α-naphthyl acetate and 4-nitrophenylvalerate) in different... 相似文献