bluuebunny/crossref_metadata_2025_split huggingface dataset:
Features of migration and nesting of waterfowl in the zone of influence of the Siberian Chemical Combine (SCC)
Authors: Gureev S P 
Published: December 2019

Abstract
The flyby of waterfowl (Anseriformes) in the south-taiga zone of the Tomsk Priobye is associated with the valleys of large rivers. In natural landscapes, the migration process is largely determined by the nature of spring and weather conditions of a particular year. However, there are many cases when birds in an anthropogenically-transformed habitat “receive certain advantages” in comparison with natural landscapes. The observations were carried out in 1995–2001 on the reservoirs of the Tom River floodplain and on the system of inter-river technogenic settling reservoirs (reservoirs-coolers of the Siberian NPP) in the sanitary protection zone of the SCC (SPZ) of the SCC and closed administrative-territorial unit («ZATO Seversk»). Changes in the timing and intensity of the spring flyby, nesting density and success of reproduction of ducks depending on various natural and anthropogenic factors are traced. The majority of the waterfowl spring flies in transit and does not often use the reservoirs of the Tom River floodplain for rest and feeding, but willingly lingers on the rich food warmer waters technogenic of the SPZ of the SCC. For the first time, significant differences were established in the species composition, abundance, biotopic distribution, and success of duck nesting in natural and man-made reservoirs: in years with early and late springs, in years with different water levels in reservoirs with regulated flow. For the first time, an assessment was made of the strict, “reserved” mode of functioning of the territory of the «ZATO Seversk», which determines the almost complete absence of disturbance factors on technogenic reservoirs during periods of flyby and nesting ducks.
Biotopical variability of Myodes rutilus mandibula shape in the taiga-woodland zone of the south of Western Siberia
Authors: Kokhonov E V , Ryadinskaya G S , Nekhoroshev O G , Kokhonova K Y 
Published: December 2019

Abstract
The method of geometric morphometry was used to study the variability of the shape of the red vole’s (Myodes rutilus Pallas, 1779) mandibula in the taiga-woodland zone in the south of Western Siberia. A discrepancy in the morphospace of the mandibula shape of animals from the territory of three local biotopes was revealed. The red voles of the extrazonal floodplain biotope differ in both configuration and larger mandibula size in relation to the animals of the taiga and subtaiga subzones.
The possibility of using the waste of the lignocellulosic hydrolysates biodetoxification as a seed treater of wheat varieties zoned in the West Siberian region of the of the Russian Federation
Authors: Morozova T S , Burnashova E N , Semyonov S Yu , Kuznecova E V 
Published: December 2019

Abstract
In the present study we investigated the possibility of using the waste of the lignocellulosic hydrolysates biodetoxification as a seed treater for wheat varieties zoned in the West Siberian region including the Tomsk region. The wastes are microbiocenoses of activated sludge, depleted during the detoxification process and capable of growing on toxic substrates. The study was conducted on three experimental objects and on wheat varieties Iren, Novosibirskaya 3, Novosibirskaya 51. For comparison, reference objects of biological preparations for plant protection Alirin-B, Fitosporin-M were used. The study showed that the waste of lignocellulosic hydrolysates biodetoxification had antifungal activity. The effectiveness of reducing the total contamination of seed infection in different experiments with experimental samples ranged from 52 to 82%. In some cases, the reference variants proved to be ineffective; the maximum effect on reducing the total seed contamination was achieved by Alirin-B and amounted about 30%. Seed treatment of wheat by the waste biodetoxification of different origins reduced the prevalence pathogens of seed wheat. At the same time the treatment did not significantly affect the increase in the parameters of plant growth and development (germination, length and weight of sprouts).
Influence of water of the small river of Western Siberia - Ulu-Yul on sprouts of wheat and tomato
Authors: Kurovsky A V , Petrochenko K A , Andreeva Yu V , Godymchuk A Yu. , Kurovskiy V N , Burnashova E N , Yakimov Yu E , Starodubtsev A E , Sheptor A S , Breit D V 
Published: December 2019

Abstract
The some hydro chemical peculiarities of the Uly-Yul River’s water (basin Ob) sampled during the spring flood has been demonstrated. In samples of river’s water was fixed high level of humic substances concentration: about 23 mg/L humic acids and about 30 mg/L fulvic acids. Ca2+ was a predominant inorganic cation with concentration 0.3 mEq/L. Electrical conductivity of researched water was about 30 μS × cm−1. The sum length of wheat shoots was statistically significantly lower for plants cultivated on Ulu-Yul River’s water (experimental group) in comparison with plants cultivated on low concentrated Hewitt nutrition solution (control group). The sum length of tomato roots was statistically significantly bigger for plants cultivated on Ulu-Yul River’s water in comparison with plants cultivated on low concentrated Hewitt nutrition solution. Both for wheat and for tomato an increasing of quantity roots/shoots ratio for experimental groups has been demonstrated.
Network of experimental sites for the study of survival of trees and shrubs in the North of Western Siberia
Authors: Egorov A A , Kirillov P S , Vasiliev N P , Fatianova E V , Trofimuk L.P. , Ivanov S A , Khmarik A G , Kukurichkin G M 
Published: December 2019

Abstract
Development of the North of Western Siberia is progressing rapidly. It is accompanied by the growth and emergence of new settlements. Creating green spaces in the harsh conditions of the North is a responsible thing. To work out a sustainable trees and shrubs assortment 15 experimental sites were laid in 2013-2016. They are located in different climatic conditions of the North of Western Siberia (in tundra, forest-tundra, northern and middle taiga). More than 6400 specimens of trees and shrubs of 313 taxa (species, varieties) and cultivars (28 families) were tested over the period. The experience showed that the mass loss of plants was associated with the underestimation of some agrotechnical features and with weather conditions. Using only the experimental test data for the development of a plants sustainable assortment is not effective. The combination of ecogeographical analysis and observations gives good results. The establishment and maintenance of experimental sites network is an important element of successful work to create a sustainable assortment of woody plants for territories with harsh climate.
Perfecting the Art of Managing Field Research Stations: Regimes of Justification
Authors: Kolesnikova T , Kolesnichenko L , Popravko I , Tchalakov I , Kirpotin S 
Published: December 2019

Abstract
The paper discusses the development of network of field research stations at one of Russian Universities as an element of the strategy to increase its international visibility and recognition. The views of University leading scientists about the perspectives and the risks in the development of this network are analyzed through the conceptual models of ‘secluded research’ and ‘research in wild’[1]. Departing from the methodological approach of L. Boltanski and L. Thévenot in studying the ways human actors are justifying their actions (orders of worth), we claim that basic principles of ‘secluded research’ and ‘research in wild’ could be considered as justification principles that legitimize specific type of research management. By comparing the shortcomings and advantages of the two sets of principles, the paper provides insights for better realization of the importance of the efforts to develop University’ network of field research stations and offers a critical reflection on them (which by itself is a resource for the further works in that direction).
Effect of different types of phosphorylating reagent on the synthesis of modified tapioca starch
Authors: Sugih A K , Christabella L , Kristianto H , Prasetyo S 
Published: December 2019

Abstract
Tapioca starch is isolated from the root of cassava (Manihot esculenta) plant and currently ranked second among commercial starch produced worldwide. Tapioca starch has very low residual impurities, bland flavor, and superior gel properties. Native tapioca starch has been widely used for daily food preparation. Chemical modifications of native starch structure, however, is often needed before starch can be utilized for industrial applications. In this research, a preliminary study on the use of different types of phosphorylating reagents (Sodium Tripolyphosphate/STPP, Sodium Trimetaphosphate/STMP, and mixture of both reagents) on the synthesis of modified tapioca starch was performed. Phosphorylation of tapioca starch was performed at a temperature of 130 °C, initial suspension pH of 9, and an intake of STPP of 5 %-w/w and/or STMP of 2 %-w/w based on dry starch. The experimental result shows that modified starch products with Degree of Substitution (DS) of 0.0084-0.0132 (correlated to P-content of 0.169-0.258 %-w/w) were obtained. The use of both STPP and STMP phosphorylating reagents gives starch products with increased solubility. Phosphorylation with all types of reagent also increases water and oil absorption capacity as well as paste clarity of tapioca starch. The result suggests that STPP and STMP are potential phosphorylating agents for modified tapioca starch preparation.
Effect of fermentation time on the quality of modified gadung flour from gadung tuber (Dioscorea hispida Dennst.)
Authors: Gunawan S , Aparamarta H W , Anindita B P , Antari A T 
Published: December 2019

Abstract
Gadung (Dioscorea hispida Dennst.) is one of the tubers in Indonesia that has the potential as a food source. However, due to the low nutritional value and high content of cyanide acid, these tubers cannot be consumed directly. Therefore, proper processing techniques are needed to improve the nutritional value of gadung tubers. The aim of this study was to investigate the effects of fermentation time on the quality of modified gadung flour in a reasonably short time. Soaking and submerged fermentation processes were applied. It was found that modified gadung flour can be used as a wheat flour substitution under the following conditions: water to gadung mass ratio of 50 for 120 min (soaking process) and initial bacteria cell number of 1.21 x 1011 cells of Lactobacillus plantarum at the temperature of 32 °C for 36 h (fermentation process). The result showed that protein, cyanide acid, starch, amylose, and amylopectin contents were 7.63%, 6.66 ppm, 75.27%, 38.18%, and 61.82%, respectively, while physicochemical properties, such as swelling power, water solubility, and flour whiteness degree were 6.75 g/g, 0.56%, and 71.43%, respectively.
Box-behnken design for the optimization using solvent-free microwave gravity extraction of garlic oil from Allium sativum L.
Authors: Variyana Y , Muchammad R S C , Mahfud M 
Published: December 2019

Abstract
Garlic (Allium sativum L.) has compounds that could be used as anti-microbial, anti-atheroschlerosis, anti-oxidant, anti-viral, anti-cholesterol, anti-diabetic, anti-hypertension, and anti-cancer. In this paper, oils were extracted from garlic using Solvent-Free Microwave Extraction (SFME) method without solvent which is as an alternative technique to produce oil and it has several advantages in terms of product quality and quantity. This research used technique of gravity for extraction process and produce high yield of garlic oil. The highest results were obtained from this study when at 100 g, 450 W, 10 min, and 0.5 cm. Response surface methodology was designed to evaluate the effects of mass of raw material (g), microwave power (W), extraction time (min) and material size (cm) for optimization of analytical methods. Regression models have designed and predicted experimental values well. Gas chromatography-mass spectrometry (GC-MS) technology was used to analyze the chemical compositions of garlic oil. The results showed that sulphide compounds, like diallyl disulphide, trimethylene trisulfide, ester and alcohol which is found in garlic oil.
Optimization of microwave hydro-distillation of lemongrass leaves (Cymbopogon nardus) by response surface methodology
Authors: Variyana Y , Mahfud M , Ma’sum Z , Ardianto B I , Syahbana L P , Bhuana D S 
Published: December 2019

Abstract
Essential oil of lemongrass (Cymbopogon nardus) or Citronella Oil is widely used in industry, especially pharmaceuticals and perfumes. The microwave assisted method was successfully applied in extracting fragrant essential oils on a laboratory scale of extraction, namely Microwave Hydrodistilation (MHD). MHD is a combination of hydrodistillation with microwave for extraction. The purpose of this research was to study several effects parameters (microwave power, material size, and extraction time) on the yield of Citronella Oil obtained by the MHD method and to find optimal conditions using response surface methodology (RSM). The results showed that the smaller size of the material, the lower the yield of oil obtained. The longer extraction time, results in higher yields was. While the greater the power, the higher the yield produced. The highest results obtained for extraction using the MHD method are the microwave power at 600 W, material size of 0.5 cm, and extraction time is 90 min in resulting a yield of 1.817%. Chemical Analysis of Citronella Oil was the highest component that analyzed by gas chromatography-mass spectrometry (GC-MS) technology.
Effect of intraparticle diffusion-reactions at reverse flow reactors. Cases study: Methane catalytic oxidation
Authors: Effendy M , Wardhono E Y , Soeryanto  , Arsana I M 
Published: December 2019

Abstract
Reverse Flow Reactor (RFR) is a fixed bed reactor whose direction of flow changes at a certain time periodically. To obtain an overview of the flow direction changing on the RFR effect on the reaction rate, the intraparticle diffusion reaction factor needs to be assessed. The flow that changes in RFR causes the value of tortuosity to behave dynamically so that the reaction rate also changes dynamically. The model approach that involves intraparticle diffusion reactions is to determine the effectiveness factor. The procedure used is to estimate the effectiveness of the simulated reaction, which allows obstacles due to intraparticle diffusion to be considered at each point of the reactor without using numerical integration of the diffusion equation in the pellet (catalyst). The results obtained show that the conversion of methane gas changes over time. This change can be approached by assuming the total reaction rate in bulk is constant, but the total reaction rate in the catalyst varies depending on the intraparticle diffusion reaction, which is indicated by the value of effectiveness factor. The dynamic effectiveness factor behaviour can be approximated by the 6th degree polynomial equation as follows: 6.38e-13*t6 + 3.23e-10*t5 – 5.84e-8*t4 + 4.34e-6*t3 – 9.91e-5*t2 – 0.0004*t + 0.1781
Effect of microwave assisted sodium hydroxide pretreatment on hemicellulose content of oil palm empty fruit bunch for furfural production
Authors: Sadrina I N , Harahap A F P , Rahman A A , Gozan M 
Published: December 2019

Abstract
Oil Palm Empty Fruit Bunch (OPEFB) is one of the main types of solid waste which is continuously produced from palm oil mills. OPEFB contains lignocellulose to which the hemicellulose can be converted into furfural, an important precursor material used for producing high value chemicals, by means of a hydrolysis reaction. This process must be preceded by pretreatment in order to disrupt compact lignocellulose structure of OPEFB and to expose hemicellulose for further hydrolysis reaction. In this study, the optimum pretreatment conditions of OPEFB for hemicellulose recovery by microwave assisted alkali method with aqueous sodium hydroxide is evaluated by using response surface methodology (RSM) based on three-level three-factorial Box-Behnken design. OPEFB powder with different size ranging from 30 - 40 mesh was immersed into sodium hydroxide solution at 1 : 10 solid-liquid ratio. Variations of sodium hydroxide concentrations (1; 2; 3%), microwave power (280; 560; 840 Watt), and radiation time (3; 6; 9 minutes) were examined in this study. The quadratic model showed that pretreatment at 593.43-Watt and 1.15 % sodium hydroxide concentration for 5.99 minutes recovered the highest hemicellulose of OPEFB i.e. 23.22%.
Fischer-Tropsch process from synthesis gas over fe-co/HZSM-5 catalyst to produce biofuel
Authors: Roesyadi A , Jimmy  , Ihsanti D H , Nuraini A 
Published: December 2019

Abstract
Fischer-Tropsch synthesis is the process of converting hydrogen into liquid fuel through several stages, namely: polymerization of CO and H2 gases into long chain hydrocarbons. From the FT process that requires many of these steps, this research was carried out in order to be able to simplify the Fischer-Tropsch process through limited polymerization to obtain liquid fuels. By combining Co and Fe metal catalysts, it is expected to show better performance than the use of individual metals. Using a Fe-Co/HZSM-5 metal catalyst combination in a fixed bed reactor at a reaction temperature of 225°C. Fe-Co / HZSM-5 catalyst was made by wet impregnation, then Fe-Co/HZSM-5 catalyst was characterized using XRD, BET, and SEM-EDX. From the XRD results, the addition of Fe and Co did not change the crystal structure of the HZSM-5 catalyst. The surface area of the HZSM-5 was 526.03 m2/g and decreased after the addition of metal (Fe and Co) to the HZSM-5. This change indicates that Fe and Co particles were successfully dispersed on the surface of the HZSM-5 and inserted into the HZSM-5 pore. Hydrocarbon biofuel products are analyzed using GC-MS. The results of GC-MS hydrocarbon products showed the highest compounds for hydrocarbons C13 and C14 chains were 5.78% and 6.68% at 225 °C.
Characterizations of Ag doped ZnO particles via flame pyrolysis method for degradation of methylene blue
Authors: Kusdianto K , Kusuma T C , Hudandini M , Widiyastuti W , Madhania S , Machmudah S , Nurtono T , Winardi S 
Published: December 2019

Abstract
Flame pyrolysis is widely used for the fabrication of particles because of great crystallinity and fine size distribution of the products. In this research, ZnO-Ag particle materials have been favourably made by flame pyrolysis. The impacts of Ag loading varying from 0 to 20 wt% on the photocatalytic activity of ZnO-Ag particle under ultraviolet (UV) and sunlight irradiations were studied. ZnO-Ag particles were fabricated based on zinc acetate dihydrate (Zn(CH3COO)2.2H2O) 0.1 M and silver nitrate (AgNO3) as a precursor inside a flame reactor. Crystallinity and morphology of ZnO-Ag particles were identified by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. SEM analysis showed that the particles had irregular sphere-like shapes. The XRD patterns showed that the produced ZnO had a wurtzite structure with different crystallite sizes. XRD analysis also confirmed the existence of Ag particles in ZnO-Ag particles after the addition of Ag greater or equal to 5 wt%. The existence of Ag was indicated by the appearance of the XRD peak at 38.1°. The peak at 38.1° increased with the increase of Ag loading. Finally, the photocatalytic activity was evaluated by estimating the degradation of methylene blue aqueous solution under UV and sunlight irradiations. It noted that the most excellent photocatalytic performance was achieved at 5 wt% Ag loading for both irradiations.
The effect of catalyst weight on the photocatalytic performance of ZnO-Ag nanocomposites prepared by flame pyrolysis method
Authors: Kusdianto K , Syafrul S , Rahmat M N , Widiyastuti W , Shimada M , Jiang D , Winardi S 
Published: December 2019

Abstract
ZnO is the most widely used as a catalyst material for photocatalytic application due to the suitable band gap energy and the chemical stability. It was reported by our previous study that the photocatalytic performance was significantly affected by the Ag content. In this study, ZnO-Ag nanocomposite materials have been successfully fabricated by flame pyrolysis and the effects of catalyst weight ranging from 2 to 10 mg on the photocatalytic performance were also investigated. Zinc acetate and silver nitrate were used as precursors for producing ZnO-Ag nanocomposites. The catalyst products, ZnO-Ag nanocomposite, were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). While, UV Vis spectrometry was used to measure the concentration of methylene blue (MB) before and after irradiations. Photocatalytic performances of nanocomposites were performed by evaluating the degradation of MB under UV and sunlight irradiations. The photocatalytic tests showed that the best performance was attained when the Ag content was 5 wt% and the weight of catalyst was as much as 10 mg after irradiation with sunlight, where the degradation rate of MB was 98% and the rate constant was 0.09/min.
Extraction refined carrageenan using ultrasonic irradiation in from Kappaphycus Alvarezii originated from Lontar
Authors: Sari D K , Barleany D , Lestari R S D , Mustikawati L 
Published: December 2019

Abstract

Kappaphycus alvarezii or commonly known Eucheuma cottonii is a source of kappa-carrageenan and could find cultivated in the coastal areas of Indonesia especially in Lontar Banten province. Kappaphycus alvarezii is one type of red seaweed contained kappa carrageenan. Lontar beach in Banten province is one that produced red seaweed In Indonesia. Refined Carrageenan could be used as a stabilizer, thickener, gel, medicine, cosmetics, etc. An important factor affected the production of refined carrageenan one of them is the temperature and extraction method. In this study refined carrageenan extracted used the ultrasonic irradiation method from Kappaphycus alvarezii originated from coastal lontar has never been studied. This research aimed to determined the effect of temperature using ultrasonic irradiation. The result indicated that higher temperature increased of the sulphate content, gel strength, gelling point and ash content but reduced in moisture and yield. This study the best temperature extraction is 700°C.
Fuel oil production from thermal pyrolysis of packaging plastic
Authors: Irawan A , Bindar Y , Kurniawan T , Alwan H , Hidayat A , Putri A H I 
Published: December 2019

Abstract
Nowadays, Plastics are widely used mainly as packaging. With the increasing use of plastic, the amount of plastic waste was increasing. Plastic was a material that was difficult to decompose naturally so that plastic waste will continue to accumulate. This condition will disturbance the environment. In other conditions, energy needs, especially fuel oil, are increasing but the availability of crude oil was limited. This condition requires alternative fuels to maintain the availability of fuel oil for the needs of industry, vehicles and households. Both of these conditions can be related to convert plastic waste into fuel oil through the pyrolysis process. Pyrolysis of plastic waste can be done as thermally and catalytically. The thermal plastic pyrolysis process can be carried out at temperatures between 300-500°C and pyrolysis time between 30-60 minutes. The results of pyrolysis of plastic waste produce fuel oil which can be used as fuel in industries such as boilers. Yield of pyrolysis plastic polypropylene (PP) was higher than plastic polyethylene (PE). The physical properties of oil plastic pyrolysis PE and PP like gasoline but the flash point was lower than gasoline.