排序方式: 共有214条查询结果,搜索用时 231 毫秒
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Size‐based interactions and trophic transfer efficiency are modified by fish predation and cyanobacteria blooms in Lake Mývatn,Iceland
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Zeynep Ersoy Erik Jeppesen Serena Sgarzi Ignasi Arranz Miguel Cañedo‐Argüelles Xavier D. Quintana Frank Landkildehus Torben L. Lauridsen Mireia Bartrons Sandra Brucet 《Freshwater Biology》2017,62(11):1942-1952
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Ömer Topdağı Ozan Toker Sezgin Bakırdere Ertuğrul Osman Bursalıoğlu Ersoy Öz Önder Eyecioğlu Mustafa Demir Orhan İçelli 《Biometals》2018,31(4):673-678
The main purpose of this study was to investigate the relationship between the electron densities and Na/K ratio which has important role in breast cancer disease. Determinations of sodium and potassium concentrations in blood samples performed with inductive coupled plasma-atomic emission spectrometry. Electron density values of blood samples were determined via ZXCOM. Statistical analyses were performed for electron densities and Na/K ratio including Kolmogorov–Smirnov normality tests, Spearman’s rank correlation test and Mann–Whitney U test. It was found that the electron densities significantly differ between control and breast cancer groups. In addition, statistically significant positive correlation was found between the electron density and Na/K ratios in breast cancer group. 相似文献
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Oguz Ege 《Archives of microbiology》1965,52(1):20-48
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Leptin induces ADAMTS‐4, ADAMTS‐5, and ADAMTS‐9 genes expression by mitogen‐activated protein kinases and NF‐ĸB signaling pathways in human chondrocytes
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Metin Ersoy 《人类与生态风险评估》2015,21(8):2099-2125
In this article, some occupational risk analyses are summarized, and then the possible occupational accidents, and their causes and effects are discussed. In the second section, an idea on risk analysis called Failure-Consequence Analysis is proposed to be applied in workplaces. In the third section, a case study about the implementation of this method in a marble factory is given as an example. In the final section, advantages and disadvantages of the proposal are discussed.
As a result, it's suggested that the proposal is simple, easy, and can be applied quickly. It can identify the possible accident spots, severities, and causes in a single pass in the facility. 相似文献
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Ali Oguz Buyukkileci Marcello Fernandez Lahore Canan Tari 《Bioprocess and biosystems engineering》2015,38(4):749-760
The production of exo-polygalacturonase (exo-PG) from orange peel (OP), a food industrial waste, using Aspergillus sojae was studied in submerged culture. A simple, low-cost, industrially significant medium formulation, composed of only OP and (NH4)2SO4 (AS) was developed. At an inoculum size of 2.8 × 103 spores/mL, growth was in the form of pellets, which provided better mixing of the culture broth and higher exo-PG activity. These pellets were successfully used as an inoculum for bioreactors and 173.0 U/mL exo-PG was produced. Fed-batch cultivation further enhanced the exo-PG activity to 244.0 U/mL in 127.5 h. The final morphology in the form of pellets is significant to industrial fermentation easing the subsequent downstream processing. Furthermore, the low pH trend obtained during this fermentation serves an advantage to fungal fermentations prone to contamination problems. As a result, an economical exo-PG production process was defined utilizing a food industrial by-product and producing high amount of enzyme. 相似文献
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Celikyurt IK Ulak G Mutlu O Akar FY Mulayim S Erden F Komsuoglu SS 《Life sciences》2012,90(5-6):185-189
AimsThe effect of an antiepileptic drug on cognitive function is of primary importance with respect to the patient's quality of life. Levetiracetam (LEV) is a novel antiepileptic drug used to treat epilepsy, but its effects on spatial and emotional learning and memory are not yet well understood. The goal of our study was to establish the effects of LEV (17 and 54 mg/kg, intraperitoneally (IP)) on spatial memory retrieval in the Morris water maze test and on acquisition and memory formation in the passive avoidance (PA) test in naive mice.Main methodsThe subjects were adult male BALB/c mice. Spatial learning and memory was established with the Morris water maze (MWM) test. The ‘time spent in escape platforms quadrant’ and the ‘distance to platform’ analyses were measured using a video tracking system to determine spatial memory function. Emotional learning and memory were determined with a one-trial, step-through passive avoidance test.Key findingsIn the MWM test, LEV (17 and 54 mg/kg) neither affected the time spent in the target quadrant nor altered the distance to platform. Moreover, LEV had no effect on swim speed. In the PA task, LEV (17 and 54 mg/kg) significantly prolonged retention latency.SignificanceOur results indicate that LEV did not alter spatial memory retrieval in the MWM test, but it did show some ameliorating effects on acquisition and memory formation in the PA test in naive mice. 相似文献