The effects of n-butanol on oxidative stress and apoptosis in zebra fish (Danio rerio) larvae

PubMed: 31669665In recent years, n-butanol has growing use in many areas, including the food industry. In this study, acute toxic effects of n-butanol to zebrafish (Danio rerio) larvae by applying different concentrations (10, 50, 250, 500, 750, 1000 and 1250 mg/L) to embryos were evaluated. For this purpose the data of oxidative stress, antioxidant - acetyl cholinesterase enzyme activities, malondialdehyde level and apoptosis were taken into consideration. At the end of the 96 h, antioxidant (Superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx)) and acetylcholinesterase (AChE) enzyme activities were decreased, however lipid peroxidation level, apoptotic cells, and reactive oxygen species increased (p < .05). As a result, it has been observed that high concentrations of n-butanol with its amphiphilic structure causes quite intense toxic effects in zebrafish embryos. © 2019 Elsevier Inc

Investigating routes performance of flight profile generated based on the off-design point: Elaboration of commercial aircraft-engine pairing

In this study, the route performance aspects of B707-JT3D pairing are comprehensively reviewed. A flight route consisting of nine flight operations of the B707-JT3D pairing is defined. The defined flight route was designed to be equivalent to the route a real commercial aircraft is currently exposed to. Parametric cycles were prepared via GasTurb12 software to obtain each flight profile data on the route. The evaluation of the parametric cycle data was carried out by thermodynamic analysis and the performance map of the B707-JT3D pairing is presented. The performance map consists of pressure, temperature, air/fuel mass flow rates, throttle settings, exergy rates, entropy generation rates, exergy efficiency and the exergy destruction function. Ultimately, parameters obtained from the analysis are expected to help understand the linkage between engine selection for commercial aircraft and green flight paths and, therefore, make aircraft-engine pairing more environmentally benign and greener. © 2019 Elsevier Lt

Corrigendum to “Preparation of bio-electrodes via Langmuir-Blodgett technique for pharmaceutical and waste industries and their biosensor application” [Colloid Surface A: Physicochem. Eng. Aspects, 583 (2019) 124005](S0927775719309951)(10.1016/j.colsurfa.2019.124005)

The authors regret “The authors express gratitude to Dr. Kader Dağcı Kıranşan, from the Department of Chemistry, Atatürk University for her support in the studies given in Table 3, Figures 4 and 5”. The authors would like to apologise for any inconvenience caused. © 2019 Elsevier B.V.The authors express gratitude to Dr. Kader Da?c? K?ran?an, from the Department of Chemistry, Atat?rk University for her support in the studies given in Table 3, Figures 4 and 5. The authors would like to apologize for any inconvenience caused

Ternary CuCo2S4 Thiospinel Nanocrystal-Coated Photodiode with Improved Photoresponsivity and Acceptance Angles for Optoelectronic Applications

Ternary-structured thiospinels have attracted great attention in recent years for energy applications due to their attractive characteristics such as simple production, earth-abundant components and non-toxic nature. In this work, copper cobalt sulfide (CuCo2S4 or carrollite) thiospinel nanocrystals were synthesized by a hot-injection method, and detailed electrical and optoelectronic characterizations were performed in a Schottky device. The synthesized nanocrystals were used as an interfacial layer between the Au metal and p-Si semiconductor to obtain an Au/CuCo2S4/p-Si device. The structural and morphological characterizations confirmed the crystallinity, nanostructure and composition of the CuCo2S4 nanocrystals. The I–V and C–V measurements were employed to characterize the Au/CuCo2S4/p-Si device for various illumination intensities. The obtained device exhibited good rectifying and photodiode properties as well as good photocapacitance. The Au/CuCo2S4/p-Si device can be used and improved for optoelectronic applications. © 2019, The Minerals, Metals & Materials Society.217M212This work is supported by TUBITAK (The Scientific and Technological Research Council of Turkey) under Project Number 217M212. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations

Preparation of bio-electrodes via Langmuir-Blodgett technique for pharmaceutical and waste industries and their biosensor application (vol 583, 124005, 2019)

WOS: 000504350600087

An ethnobotanical research in Sanliurfa central district and attached Villages (Turkey)

WOS: 000504883300001The objective of present study is to identify the plants traditionally utilized by local communities, who reside at the rural areas attached to Central District of Sanliurfa located in Southeast Anatolia Region, for various purposes, and to reveal the significant of such use in terms of ethnobotany. The study conducted in this respect identified 137 taxa of 87 genera from 47 families (86 species, 34 sub-species, and 17 varieties), 21 of them are cultigens. 1 taxon is from Terfeziaceae of Ascomycota division of Fungi kingdom, while the others are from Gymnospermae and Angiospermae sub-division of Spermatophyte division from the Plantae kingdom. In general, local community utilizes taxa identified in field of study as follows: 56 taxa as food, 37 as medicinal purposes, 5 for belief, 5 for pests, 4 as household goods, 3 as seasoning, 3 as ornaments, 3 as cosmetics, 2 as beverages, 2 as knick-knack, 2 as fuel, 2 as building materials, 1 as dulling, 1 as canopy, 1 as aphrodisiac, 1 as clarifying, 1 as repellent, 1 as doddle, 1 as preventive and 1 as aroma. Moreover, 11 taxa are not utilized, but 7 of them are known by their local names and 4 with their harmful effects.Harran University Scientific Research CommitteeHarran University [13152]We hereby acknowledge Harran University Scientific Research Committee (Project No: 13152) for offering financial support and Hakki Sazak, Survey Technician, for drawing the map of the study area

Dark and illuminated electrical characteristics of Si-based photodiode interlayered with CuCo5S8 nanocrystals

Derived from the traditional dichalcogenide CuS structure, ternary transition metal chalcogenide nanoparticles in the form of CuCo5S8 are investigated under the aim of photodiode application. In addition to the detailed analysis on material characteristics of CuCo5S8 thin-film layer, the work is focused on the electrical characteristics of Au/CuCo5S8/Si diode to investigate its current–voltage, capacitance–voltage, and conductance–voltage characteristics under dark and illuminated conditions. CuCo5S8 nanocrystals with an average size of 5 nm are obtained using hot-injection method, and they are used to form thin-film interfacial layer between metal (Au) and semiconductor (Si). Under dark conditions, the diodes show about four orders in magnitude rectification rate and diode illumination results in efficient rectification with increase in intensity. The analysis of current–voltage curve results in non-ideal diode characteristics according to the thermionic emission model due to the existence of series resistances and interface states with interface layer. The measured current–voltage values are used to extract the main diode parameters under dark and illumination conditions. Under illumination, photogenerated carriers contribute to the current flow and linear photoconductivity behavior in photocurrent measurements with illumination shows the possible use of CuCo5S8 layer in Si-based photodiodes. This characteristic is also observed from the typical on/off illumination switching behavior for the photodiodes in transient photocurrent, photocapacitance, and photoconductance measurements with a quick response to the illumination. The deviations from ideality are also discussed by means of distribution of interface states and series resistance depending on the applied frequency and bias voltage. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.217M212This study was supported by TUBITAK (The Scientific and Technological Research Council of Turkey) under Project Number 217M212. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations

Diversity of biochemical content in fruits of some indigenous mulberry genotypes

This research was carried out to assess the biochemical diversity of the fruits of mulberry genotypes grown in Muş Province in the eastern Anatolia region and to determine the genotypes available for breeding. Morphological and biochemical characteristics of 13 mulberry fruit genotypes, including 5 white (Morus alba) and 8 black (Morus nigra), were determined. Fruit antioxidant capacity was determined by Trolox equivalent antioxidant capacity assay. Fruit weight, pH, soluble solid content, titratable acidity, vitamin C, and antioxidant capacity were 1.38–3.77 g, 4.77–6.79, 14.33%–23.50%, 0.53%–2.20%, 4.47–35.83 mg 100 g –1 , and 4.33–13.63 µmol Trolox equivalent g, respectively, indicating enough diversity among genotypes for future breeding activities. Considering all genotypes, malic acid was dominant, and the highest malic acid content was detected in 4 Morus nigra genotypes as 8.546 mg g –1 fresh weight. Chlorogenic acid, rutin, and gallic acid were determined as the main phenolics among white and black mulberry genotypes. The highest chlorogenic acid, rutin, and gallic acid contents were found in black mulberry genotypes as 2.511 mg g –1 (Morus nigra 1), 1.285 mg g –1 (Morus nigra 1), and 1.162 mg g –1 (Morus nigra 3), respectively. In general, the genotypes sampled and used in the present study exhibited a broad range of variation. © TÜBİTAK

Study of the static characteristic I-V and the electrical parameters corresponding to the shunt resistance Rsh and series resistance Rs per unit area of a solar cell with grain size

This paper presents a new technique based on the junction recombination velocity (Sf: junction recombination velocity) at the grain size for the evaluation of the series and shunt resistances. The study of the response of the solar cell and the parameters of recombination in grain size, which are the object of the investigation, is related to the study of the static characteristic I-V and electrical parameters Rs and Rsh under a magnetic field. This study has allowed us to address some of the theoretical aspects of the field solar cell in order to draw a conclusion and some perspectives. Based on the results obtained for the photocurrent density and the photovoltage, we will study the I-V characteristic of the solar cell to then be able to propose a model for the determination of the shunt resistance Rsh and the series resistance Rs. Series resistance investigations, including numerical simulations and field data tests, are conducted to examine the energetic behavior of the PV modules for efficiency. Experimental results show that the proposed direct resistance-estimation method allows the PV modules to achieve their maximum power and efficiency under various operation conditions. © 2019 The Physical Society of the Republic of China (Taiwan

Herbage, seed yield, and nutritive value of wild oat (a vena fa tua l.) is influenced by different levels of nitrogen

Nitrogen (N) is considered as one of the most essential nutrients that influences the leaf growth, herbage yield and protein content of oat as a forage crop. The majority of N absorption by plants are occurred almost immediately before the stem elon gation stage for rapid growth, whereas the demand of N is maximum at early to maximum vegetative stage. However, to obtain maximum herbage and grain yield and also to increase N use efficiency, it is important to apply N when crop is physiological ly prepared to generate tillers and also crop is at a favourable environmental conditions. In the con text, the current research was undertaken to de scribe the effects of different levels of N on herb age, seed yield and nutrients content of oat at the Agricultural Research Station of Igdir, Turkey during the year 2014. Treatments were four levels of N with a control treatment: 0, 30, 60, 90 and 120 kg N ha*1. After experimentation, it was observed that increasing levels of N improved the plant length, green herbage and seed yield. The herbage yield of oat was increased from 16.0 to 31.1 t ha"1 due to the increase of N levels. Similarly, the crude protein (CP%) was increased from 7.57 to 10.0 % by increasing N levels upto 120 kg ha"1. Although, no significant difference in CP % was observed among the levels of N, but numerically the maxi mum CP % was recorded from the maximum level of N (120 kg ha1), followed by 60 and 90 kg N ha"1. The neutral detergent fiber (NDF) and acid deter-gent fiber (ADF %) did not differ significantly among treatments. Numerically, the highest NDF % and the lowest ADF % were recorded from 120 kg N ha"1 treatment. But, dry matter digestibility (DMD), digestible energy (DE) and metabolisable energy (ME) of Oat herbage were influenced signif-icantly by different levels of N. The maximum DMD. DE and ME were recorded from the maxi mum levels of N (120 kg N ha"1), followed by 60 kg N ha"1. In case of grain yield (GY) and yield attrib utes, the maximum values were also recorded from 120 kg N ha1, followed by 90 kg N ha"1 and the lowest values for all parameters and harvest index were recorded from control plot. In conclusion, application of N fertilizers to wild oat at a rate up to 120 kg N ha l can improve the yield and nutrient composition of oat herbage with more favorable nutritional facts for livestock. © 2019 Parlar Scientific Publications. All rights reserved