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1.
Saeid Ghasemi Esfahlan Roghayeh Hemmati Shohreh Mohebbi Jacqueline Batley Mahdi Arzanlou 《Forest Pathology》2023,53(1):e12784
Trunk disease is a major problem on grapevine in Zanjan province, causing serious decline, despite which its aetiology remains unknown. The purpose of this study was to investigate factors involved in grapevine decline in vineyards of Zanjan province. Samples were collected from twigs and branches of grapevines in the region between October and November 2018. Fungal isolates were identified based on morphological characteristics and ITS-rDNA sequence data for selected isolates. The frequency and diversity of the fungal community recovered from grapevines in Darreh Sejin in Zanjan province were higher than in other regions. A total of 112 fungal isolates comprising 22 species were recovered. Phaeoacremonium minimum, Microsphaeropsis olivacea and Kalmusia variispora were identified as the dominant species in the region examined and could be considered the main trunk pathogens of grapevines in Zanjan region. In inoculation tests, M. olivacea was proved to be pathogenic on grapevine for the first time in this study. 相似文献
2.
Japoni A Farshad S Alborzi A Kalani M Rafaatpour N Oboodi B Pourabbas B 《Pakistan journal of biological sciences: PJBS》2008,11(3):422-427
This study was conducted to determine the prevalence of bacteria recovered from bloodstream samples by Bactec 9240 at our hospital wards and to evaluate their antibacterial susceptibility patterns. During January 2001 through December 2004, 9407 referred blood samples in Bactec bottles from admitted patients at three main wards, neonates, pediatrics and adults at Nemazee Hospital, affiliated to Shiraz University of Medical Sciences in Shiraz were processed. Positive cultures were purified and identified according to standard methods. Sensitivity of bacteria to different antibiotics was determined by Kirby-Bauer disk diffusion method. Staphylococcus aureus 132(25%), Escherichia coli 64(12.1%) and Pseudomonas aeruginosa 52(9.8%) were the most pathogenic bacteria which were recovered from the blood samples. Pathogenic microorganisms were isolated from blood samples of 305 (57.8%) at pediatrics, from 181 (34.2%) at adults and from 42 (8%) at neonates wards. The highest antibiotics activities against gram positive isolates observed for vancomycin (98.4%), chloramphenicol (86.4%) and ciprofloxacin (77.4%), while in gram negative bacteria imipenem (96.1%), ciprofloxacin (83%) and amikacin (77.9%), were effective antibiotics. Frequency of isolated bacteria at pediatrics compared to adults and neonates wards were approximately two and seven folds high, respectively which indicates special attention should be paid to pediatrics patients both in prevention and treatment aspects. Vancomycin and imipenim are the effective antibiotics and could cover majority of gram positive and negative bacteria. Therefore, combined administrations of these antibiotics seems mandatory for empirical therapy. 相似文献
3.
Kariminia A Kavoossy G Khatami S Zowghi E Ardestani SK 《Comparative immunology, microbiology and infectious diseases》2002,25(2):85-93
The aim of the present study is to investigate the cytokines induction by smooth lipopolysaccharides (S-LPS) extracted from Brucella melitensis (Rev1 vaccine strain) and Brucella abortus (a field isolate). These lipopolysaccharides were used to induce inflammatory cytokines production in peripheral blood cell culture of healthy individuals. Secretion of IL-10 and IL-12 (p70) were measured by means of specific Elisa. In addition, intracellular expression of IL-12 was assessed in CD14+ cells by flow cytometry. It was shown that Brucella LPS is a potent inducer of IL-10. However interferon gamma (IFN-gamma) priming was able to significantly decrease the production of IL-10. Flow cytometry studies showed that LPS alone was not able to induce intracellular IL-12 expression in CD14+ cells. Nevertheless, IFN-gamma priming significantly increased the percentage of CD14+ IL-12+ cells. In conclusion, it was demonstrated that the Brucella LPS could be a potent inducer of IL-10 and induction of IL-12 production needs the most favorable conditions. 相似文献
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Mohammad Nakhaei Tafreshi Amin Mohebbi Tafreshi Ghazaleh Mohebbi 《Eurasian Soil Science》2021,54(5):716-728
Eurasian Soil Science - In this research, six samples of valid and widely soil-water retention curve (SWRC) estimation models, including van Genuchten, Brooks and Corey, Fredlund and Xing, Durner,... 相似文献
6.
Mohammad Reza AmiryousefiMohebbat Mohebbi Faramarz KhodaiyanShahrokh Asadi 《Computers and Electronics in Agriculture》2011,76(1):89-95
Deep-fat frying (DFF) is a cooking process, in which water containing foodstuff is immersed into edible oils or fats at temperatures above the boiling point of water. This process is a fast and easy method to prepare tasty foods; therefore, despite the trend to low-fat foods, deep-fried products enjoy increasing popularity. Moisture content (MC) and fat content (FC) are very important quality indicators for fried foods in terms of health concerns and palatability of the products. This paper presents a new approach based on an adaptive neuro-fuzzy inference system (ANFIS) and self-organizing map (SOM) clustering for more accurate predicting MC and FC during DFF of ostrich meat plates. First the data set of each mass transfer parameter was categorized into two clusters by SOM method, and at the next stage each cluster was fed into an independent ANFIS models with the ability of rule base extraction and data base tuning. To train the ANFIS prediction system, triangular membership function (MF) was chosen. Results showed that the optimized ANFIS model with clustering improved the prediction ability of ANFIS and truly described mass transfer during the DFF (12.46% improvement with R = 0.96 for MC and 5.46% improvement with R = 0.92 for FC). This methodology can also be applied to optimize the operating conditions. 相似文献
7.
Nourozi A Talebi H Fateh S Mohammadzadeh A Eghtesadi-Araghi P Ahmadi Z Savarabadi A Mohebbi A 《Pakistan journal of biological sciences: PJBS》2010,13(24):1214-1218
To determine the effect of adding ketamine to pethidine in reducing post-operative pain in patients undergoing major abdominal operations, in a double blind randomized controlled trial, 100 patients aged 15-60 years who were candidate for elective major abdominal surgery allocated into two groups of pethidine + ketamine group (5 mg pethidine and 0.25 mg kg(-1) ketamine) or pethidine and placebo group (10 mg pethidine and NS) according to the regimen prescribed in postanesthesia care unit. Severity of pain (using visual analogue scale), prescribed dose of pethidine and side effects were recorded until 24 h after operation. Regarding post-operative pain, pethidine + ketamine group showed significant lower scores in all the times except 0 min, 2, 6 and 16 h. Nausea was significantly less frequent amongst pethidine + placebo group at times of 0, 15, 30 and 45 min (p < 0.05). Comparison of two groups did not show significant differences in prescribed pethedine dose in 0, 9, 12, 16, 20 and 24 h (p > 0.05). Yet, the mean dose of administered pethidine as rescue analgesic was significant lower in pethidine + ketamine group compared to pethidine + placebo group (112 +/- 31.5 mg vs. 133.5 +/- 24.5 mg, p < 0.001). In conclusion, our results showed that co-administration of ketamine and pethidine in postanesthesia care unit will improve postoperative pain and reduce narcotic consumption. It may, however, increase rate of postoperative nausea in the first hour after operation. 相似文献
8.
Mohebbat Mohebbi Mohammad-R Akbarzadeh-T Fakhri Shahidi Mahmoud Moussavi Hamid-B Ghoddusi 《Computers and Electronics in Agriculture》2009,69(2):128-134
This paper presents a method based on computer vision systems (CVS) to estimate shrimp dehydration level by analyzing color during drying process. Since the most commonly used color space in food industry is L*a*b, transformation of RGB digital images to L*a*b units was carried out using direct two steps model with γ factor. Experimental data obtained from images captured at different drying temperatures (100–130 °C) and several time intervals (15–180 min) were analyzed with a complete randomized block design (CRBD), and the means were compared with Duncan's multi-range test. Multiple linear regression (MLR) and artificial neural networks (ANN) were applied for correlating the color features to moisture content of dried shrimp determined chemically. Results obtained with these two models lead to 0.80 and 0.86 correlation coefficients in MLR and ANN models, respectively. While there is no statistical difference at p < 0.05 between the two modeling approaches, both approaches indicate successful prediction of shrimp dehydration with high correlation to those found by the more expensive and intrusive chemical method. The automated vision based system, therefore, has the advantage over conventional subjective methods and instrumental ones for being objective, fast, non-invasive, inexpensive and precise. 相似文献
9.
Background: Primary cultures of embryonic neurons have been used to introduce a model of neurons in physiological and pathological conditions. However, age-related cellular events limit this method as an optimal model in adult neurodegenerative diseases studies. Besides, short-interval changing media in previous cultures decreases the effectiveness of this model. As an example of this matter, we can refer to the study on some special neuronal secreted factors or the influence of some experimental materials on neurons. Meanwhile, short-interval changing media could remove the effects of some released factors from the environment. In this study, the method for isolation and culturing adult rat hippocampal neurons with long-intervals medium changing has been described. Methods: The hippocampal neurons of adult male rats were cultured. We used Neurobasal A/B27 culture medium, papain (2 mg/ml), trypsin 0.25% and collagenase (1 mg/ml) for neuronal isolation, OptiPrep density gradient for separation of neurons from other cell types and also debris and FGF2 (10 ng/ml) for increasing neuronal survival and regeneration. Results: The neuronal sprouting and viability were increased by using papain and mild triturating (P<0.05). Adult neuronal culturing and their regeneration were impossible without FGF2. It was shown that adding new fresh medium every 4 days and exchanging half of it every 8 days had no detrimental effect on neuronal viability. Conclusion: This investigation shows the possibility of culturing adult neuronal cells and their maintaining in long-interval media. It could be happened because of adult neurons rely significantly on the neighboring cells secreted factors for living and making synaptic connections. This model is very useful in physiological and pathological studies which need stable conditions of neuronal culture in a long period of time. 相似文献
10.
A. Mohebbi A. Nematollahi A. Gholamhoseini A. Tahmasebi‐Kohyani S. Keyvanshokooh 《Aquaculture Nutrition》2013,19(4):506-514
An 8‐week feeding experiment was conducted to evaluate the effects of dietary nucleotides (0, 0.5, 1, 1.5 and 2 g kg?1) on serum antioxidative biomarkers and lipid contents of rainbow trout fingerlings. The serum triglycerides and low‐density lipoprotein (LDL)‐C levels were significantly decreased in fish fed diets containing 1.5 and 2 g kg?1, whereas serum high‐density lipoprotein (HDL)‐C was higher in trout receiving diets with those levels of nucleotides. A significant decrease in thiobarbituric acid reactive substances concentration was observed in groups receiving 1.5 or 2 g kg?1 of dietary nucleotides in comparison with control group (?32% and ?27%, respectively). A significant decrease was observed in catalase and serum glutathione peroxidase activity in trout fed 1.5 and 2 g kg?1 dietary nucleotides compare with other groups. There were no significant changes in serum superoxide dismutase activity among the experimental groups. In conclusion, these results suggest that dietary nucleotides may reduce lipid peroxidation by increasing the levels of antioxidant lipoprotein, HDL‐C, and decreasing the LDL‐C, the main substrate of lipid peroxidation. 相似文献