Уточнить поиск
Результаты 501-510 из 653
Nanotechnology-Based Antimicrobial Surface-Coating Technologies and Their Potential Applications Полный текст
2022
Gökhan Gurur Gökmen | Duygu Kışla
Nanotechnology has a wide study field including organic and/or inorganic particles smaller than 100 nanometers and all kinds of technological studies developed using these particles. In the production of nanoparticles, top-down approaches in which macro-sized materials were reduced to nano-sizes and bottom-up approaches in which atoms / molecules were increased to nano-sizes by different chemical reactions, are used. Currently, nanoparticles produced by top-down approaches might be used in many industries such as food industry, water treatment systems, cosmetics, and medicine. Microorganisms that tend to move, adhere, and colonize a solid surface, cause the formation of microbial biofilm on these surfaces. Microbial biofilms show high resistance to traditional antimicrobial applications in industrial environments especially where food is processed, water piping systems, biological tissues and medical implants. Therefore, the requirement has emerged to make not only the surfaces in direct contact with people, but also the surfaces in contact with food, to be resistant to microorganisms by different antimicrobial coating techniques. In this review, it is aimed to give information about the production methods of nanomaterials, different antimicrobial surface-coating techniques, the mechanism of antimicrobial nanoparticles on microorganisms and potential applications of antimicrobial surfaces.
Показать больше [+] Меньше [-]The Effect of Indole Acetic Acid on Forage Soybean under Drought Stress Полный текст
2022
Gizem Aksu
Drought is an important environmental stress that limits crop production in the world. Its importance has increased with global warming and it has become one of the most important factors limiting plant production. Soybean is the more source of obtaining and cheaper protein per unit area. Soybean has a widespread use in livestock because it contains valuable amino acids as well as high protein quality. The aim of this research is to diminish negative effect of drought stress in the forage soybean with indole acetic acid application. The experiment was carried out in the growth chamber according to a randomized block design with 4 doses (0-5-10-20 μM IAA) of indole acetic acid, 2 drought levels (0 and -0.5 MPa PEG-6000) and 3 replicate. Leaf length and width, leaf proportional water content, cell membrane damage and malondialdehyde (MDA) content of the plants were determined. The data were evaluated by analysis of variance using a statistical package program. According to the analysis of variance, all parameters were found to be statistically significant in drought x indole acetic acid interaction. Indole acetic acid applied to the forage soybean plant alleviated the damage caused by drought. For this reason, it is thought that it may be important to ensure less damage to plants grown under stress.
Показать больше [+] Меньше [-]The Effects of IBA and Paclobutrazol Applications on the Rooting Performance of Blackberry Cuttings Полный текст
2022
Muhammed Rahmetullah Çiğdem | Alperen Donat | Emircan Dinçer | Kenan Yıldız | Osman Nuri Öcalan
Difficulties in adventitious root formation in blackberry (Rubus fructicosus L.) cuttings create a disadvantage for producers. The aim of this study is to investigate the effect of different growth regulator applications on the rooting ability of blackberry hardwood cuttings in order to avoid this problem. The experiment was carried out in the polycarbonate greenhouse of Tokat Gaziosmanpaşa University Agricultural Research and Application Center In the experiment, in addition to the control (pure water) group, Indole-3-Butyric Acid (3000 ppm IBA) and different doses of paclobultrazole (500 ppm PBZ1, 1000 ppm PBZ2, 1500 ppm PBZ3) were applied to hardwood cuttings separately and in combination. After the application, the cuttings were planted in perlite medium and left to root for 90 days. At the end of this period, in the cuttings removed; rooting rate, callus formation rate, root number, root length and root diameter parameters were examined. As a result of the study, the highest rooting rate was obtained from the IBA applied cuttings (%42.22), followed by the PBZ1 applied cuttings closest (%33.33). In addition, it was determined that PBZ applications had positive effects on root diameter compared to the control group. The results obtained are important in terms of contributing to the literature and benefiting the enterprises
Показать больше [+] Меньше [-]Serological Detection of Three Common Tomato Viruses in Tomato Cultivation Areas of Ereğli District, Konya Полный текст
2022
Serkan Yeşil
In this study, it was aimed to reveal some viruses that are a problem in tomato production areas in the Ereğli district of Konya, where tomato production is common. For this reason, in the 2019 production season, leaf samples were taken from 160 tomato plants showing symptoms similar to virus disease symptoms such as mosaic, deformations, yellowing, blight on the leaves and stunted plants. Possible infections of Cucumber mosaic virus (CMV), Tomato spotted-wilt virus (TSWV) and Tomato mosaic virus (ToMV) on these leaves were tested by serological-based DAS-ELISA (Double Antibody Sandwich- Enzyme Linked Immuno Sorbent Assay) method. According to DAS-ELISA results, it was determined that 66.25% of the samples were infected with at least one of these three viruses. In addition, TSWV was detected as the most common virus with a 48.75% relative infection rate in the samples, followed by ToMV (28.75%) and CMV (26.25%). Mixed infections of the viruses were also detected in the leaf samples tested. CMV + TSWV double infection was detected in 22 samples, ToMV + TSWV double infection was detected in 14 samples, and CMV + ToMV + TSWV triple infection was detected in 12 plant samples.
Показать больше [+] Меньше [-]Investigation of Some Morphological Traits of Hair Goats in Under Breeder Conditions in Isparta Province Полный текст
2022
Mustafa Varol | Sibel Alapala Demirhan
In this study, the morphological body characteristics of hair goats bred in Isparta province, such as withers height, back height, rump height, chest width and body length, were investigated. The animal material of the study consisted of 45 hair goats in 3 farms in total, in lowland conditions, high pasture and highland conditions in the center of Isparta. In the examinations, it was found that the measurements of the males were longer than the measurements of the females in terms of withers, back and rump height, chest circumference and body length, respectively. While the difference was found to be significant in terms of withers height, back height, rump height, and body length (p
Показать больше [+] Меньше [-]Determination of Aflatoxin M1 in Buffalo Milk and Products Полный текст
2022
Serhat Hepçin | Ali Gücükoğlu
This study aimed to investigate the presence of Aflatoxin M1 (AFM1) in raw buffalo milk and buffalo milk products such as cheese, yogurt, cream, and ice cream by ELISA technique. In the study, 175 samples were investigated, and it was determined that 146 (83.43%) of the samples had AFM1 concentrations below the LOD (limit of detection) value. In 29 samples (16.57%), the AFM1 concentration exceeded the LOD value, and in 7 (4%) of these, the AFM1 concentration was above the legal limits (50 ng/L). While AFM1 was not detected in raw buffalo milk samples, the presence of AFM1 in cheese, yogurt, cream, and ice cream samples was found to be 2.85%, 2.85%, 62.85%, and 14.3%, respectively. 2.85% of cheese samples and 17.1% of cream samples were found contaminated with AFM1 above the allowed legal limits (50 ng/L). As a result, it was determined that the potential for exposure to AFM1 by consuming buffalo cream was higher than the consumption of buffalo milk and other buffalo milk products. However, the detection of AFM1 above legal limits in buffalo milk products poses a serious risk to public health. Therefore, it is extremely necessary for public health to develop effective monitoring programs to control aflatoxin contamination in milk and new strategies to maintain inspections.
Показать больше [+] Меньше [-]Investıgatıon of the development of purslane plant (Portulaca Oleracea L.) under soil stress conditions Полный текст
2022
Elif Duyuşen Güven | Serpil Özmıhçı | Gorkem Akinci | Berkay Tümer | Melda Uyar
Purslane (Portulaca oleracea L.) is an edible wild plant that is widely grown in the world, including Türkiye. Purslane plant, which is an important component of Mediterranean cuisine, can grow spontaneously in nature. Stress conditions can directly or indirectly affect its growth and development in the environment in which it is grown. In the current study, stress conditions of soil organic matter content, irrigation water amount and irrigation water salinity were investigated in pot experiments. The experiments were carried out in a 72 m2 greenhouse established on the Dokuz Eylül University Tınaztepe Campus. From the variables, soil organic matter was applied as 1%, 1.8% (control), 3% and 5% on a dry weight basis. 15 purslane seeds were planted in each pot and left to germinate. Irrigation water amounts were chosen as 100%, 75%, 50%, 30%, 15% of the field capacity. The last variable in the application was determined as the salinity of the irrigation water; the conductivity of the applied irrigation waters were control (tap water-about 0.5 mS/cm), 4 mS/cm, 8 mS/cm, 16 mS/cm. All pots were prepared in four repetitions and the study was carried out with a total of 320 pots. Experiments were carried out for 90 days from the first planting. In the study, it was observed that the increase in organic matter increased plant germination. Statistical evaluation was also made and the effects of irrigation water amount and salinity were also evaluated according to principal component analysis. As the field capacity decreased, decreases were observed in plant growth, but this was mostly observed at 30% and 15% field capacity. The negative effects of salinity on plant growth were observed at 8 mS/cm and 16 mS/cm values.
Показать больше [+] Меньше [-]Analysis of Accessibility of Primary Schools in Niğde Using GIS Полный текст
2022
Orhun Soydan
In this study, it is planned to make a spatial analysis of the accessibility function of a city using GIS. The main purpose of this study is to reveal the spatial accessibility of primary schools, which are among the educational institutions in the Merkez district of Niğde province. The Spatial Plans Building Regulation was used as a criterion for accessibility. The current number of students and teachers in the schools and the number of classrooms were obtained from the Niğde Provincial Directorate of National Education, and the obtained data were analyzed by transferring them to ArcGIS software. In the study, the Zoning Plan from the Niğde Municipality, the road and housing data obtained from OpenStreetMap, the location information of the schools and the number of students obtained from the Niğde Provincial Directorate of National Education, and the population data obtained from TÜİK were used. According to the results of the study, there are problems in accessibility the primary schools in some neighborhoods in the Merkez district, and this problem is increasing especially in rural areas. It should not be forgotten that accessibility is important for everyone, school and settlement plans should be made with reference to the values specified in the spatial plans regulation.
Показать больше [+] Меньше [-]Research on the Bio-ecology, Morphology and Seasonal Variation of Dendrobaena veneta (Rosa, 1886) Полный текст
2022
Aysel Kekillioglu | Ali Aslan Erdoğan
Dendrobaena veneta (Rosa, 1886) ( Annelida: Clitellata: Lumbricidae) is one of the most widely used compost worms which has; 50–70 mm body length,with striated red pigmentation and clitellum on segments 27–33.Thistaxon is now widely distributed all over Europe. The origin of this species is suggested to be in the East Mediterranean. D. veneta has been the subject of several cell-biological, immunological, soil and environmental studies. In this context, the main purpose and content of the study is to analyzethe bio- ecology, morphology and seasonal variation of D. veneta with the data which was obtained from the observations and examination scarried out during 2020-2022 in two different habitat locality in Nevşehir province.
Показать больше [+] Меньше [-]Determination of Some Virus Diseases Infecting Dahlia Species Grown for Landscape Purposes in Konya Province Parks and Home Gardens by Serological Methods Полный текст
2022
Serkan Yeşil
In this study, it was aimed to reveal some viruses that are a problem in Dahlia plants grown for ornamental plants in parks and home gardens in Selçuklu, Karatay and Meram districts of Konya. For this reason, in the 2019 summer, leaf samples were taken from 152 Dahlia plants showing symptoms similar to virus disease symptoms such as mosaic, deformations, yellowing, blight on the leaves and stunted plants. Possible infections of Cucumber mosaic virus (CMV), Tomato spotted-wilt virus (TSWV) and Impatiens necrotic spot virus, (INSV) on these leaves were tested by serological-based DAS-ELISA (Double Antibody Sandwich- Enzyme Linked Immuno Sorbent Assay) method. According to DAS-ELISA results, it was determined that 46.71% of the samples were infected with at least one of these three viruses. In addition, TSWV was detected as the most common virus with a 38.82% relative incidence in the samples, followed by CMV (27.63%). Mixed infections of the viruses were also detected in the leaf samples tested. As a result of the tests, only CMV + TSWV double infection was detected in a total of 30 samples. On the other hand, INSV infection was not detected in any of the leaf samples tested. As a result of survey studies, the average of prevalence rate of virus diseases in Dahlia plants grown in Konya was calculated as 69.56%. Moreover, it was determined that virus diseases were most common in Selçuklu district (75.47%). This is the first report of CMV and TSWV on Dahlia spp. in Türkiye.
Показать больше [+] Меньше [-]