bluuebunny/crossref_metadata_2025 huggingface dataset:
Retificador Elevador/abaixador Isolado De Estágio Único Com Correção Do Fator De Potência
Authors: Duarte Janderson , Michels Leandro , Rech Cassiano , Mezaroba Marcello
Published: October 2018

Este artigo apresenta um retificador de corrente isolado de estágio único com correção do fator de potência. O conversor proposto pode operar como abaixador ou elevador de tensão, dependendo dos níveis da tensão de entrada e da tensão de saída. Este artigo apresenta a análise teórica do conversor, bem como, resultados experimentais baseado em um protótipo de 3,5 kW.
Discrete-time Sliding Mode Direct Power Control For Threephase Rectifiers
Authors: De Assis dos Santos Neves Francisco , Feliciano Dias Filho Roberto , C. Camboim Felipe , Cabral Cavalcanti Marcelo , J. Bueno Emilio
Published: October 2018

In this paper a new discrete-time sliding mode control scheme for three-phase PWM rectifiers is proposed. Active and reactive powers are directly controlled using a virtual-flux oriented reference frame. Robustness of the proposed methodology under inductance variation is shown. Simulation results of a rectifier connected to a large power system are presented to compare the proposed strategy and the voltage oriented control scheme. Experimental results also show the better performance of the proposed scheme.
Application Of Artificial Neural Network In The Efficient Control Of Three-phase Induction Motor
Authors: F. dos Santos Arineu , De Assis dos Santos Neves Francisco , Ribeiro Barbosa de Aquino Ronaldo , Cabral Cavalcanti Marcelo
Published: October 2018

This work presents a method for increasing the efficiency of three-phase induction motor drives over the entire operation range. The direct field oriented control of induction motors, including the effects of magnetic saturation is used. The magnetic saturation effect in the machine is modeled by the non-linear magnetization curve of the iron core. Artificial neural networks are used to predict the optimum reference rotor flux to be used in the vector control. Details about the chosen neural networks are given. Simulation and experimental results are presented and the motor losses reduction during different load conditions is evaluated.
Desenvolvimento E Implementação De Um Retificador De Corrente Microcontrolado Para Processos Industriais
Authors: Delesposte Paulino Hendriks , Sávio Lyrio Simonetti Domingos , De Freitas Vieira José Luiz
Published: October 2018

Este artigo apresenta o desenvolvimento e a implementação de um conversor de alta corrente, controlado por microcontrolador, baseado no retificador de meia onda hexafásico. Um algoritmo de controle da corrente de carga do conversor foi desenvolvido em linguagem de montagem. O algoritmo implementa um controlador proporcional integral, PI, o qual controla a corrente de saída atuando no comando de disparo de tiristores. Foi construído um protótipo de laboratório de 6kW de potência máxima, com corrente de saída retificada de 300A e tensão média de 20V. Comparações entre resultados experimentais e resultados de simulações apontam que o modelo matemático utilizado foi adequado para a modelagem do conversor.
Estudo Comparativo Entre Topologias Integradas Para Alimentação De Lâmpadas A Vapor De Sódio De Alta Pressão
Authors: Antônio Dalla Costa Marco , Bandeira Marchesan Tiago , Scheffer da Silveira Jeferson , Nederson do Prado Ricardo , Alonso Álvarez José Marcos
Published: October 2018

Este artigo apresenta uma metodologia de integração de conversores CC/CC para alimentação de lâmpadas a vapor de sódio de alta pressão. Todos os circuitos propostos apresentam correção do fator de potência e alimentam as lâmpadas a partir de uma forma de onda quadrada de baixa freqüência, com o objetivo de evitar a ocorrência de ressonâncias acústicas. Os conversores propostos para efetuar a etapa de correção do fator de potência são buck, boost, buck-boost, flyback, sepic e zeta. A etapa de controle da corrente da lâmpada é efetuada por um conversor flyback composto de um enrolamento primário e dois secundários, os quais comutam em baixa freqüência de modo a aplicar a forma de onda adequada na lâmpada. As etapas de correção do fator de potência e de controle da corrente da lâmpada são integradas e compartilham um mesmo interruptor, de modo a reduzir custo e complexidade do reator. Uma técnica de integração de conversores, denominada grafted switches, é utilizada como metodologia de integração dos conversores propostos. São apresentados os parâmetros de projeto e, a partir destes, um procedimento de projeto dos circuitos propostos é desenvolvido. Resultados experimentais de todas as topologias propostas e uma análise comparativa entre as mesmas são apresentados.
Zczvt Inverters With Magnetically Coupled Auxiliary Pole
Authors: Da Silva Martins Mário Lúcio , De Oliveira Stein Carlos Marcelo , Luís Russi Jumar , Renes Pinheiro José , Leães Hey Hélio
Published: October 2018

Existing Zero-Current Transition and Zero- Current Zero-Voltage Transition inverters provides favorable switching conditions for IGBT semiconductors increasing significantly the reactive energy of the converter. This situation off-set the benefits accomplished by abovementioned soft-switching techniques. This paper presents a novel family of Zero-Current Zero-Voltage Transition inverters that overcome this problem by using no resonant tank in the auxiliary circuit. It accomplishes the favorable soft-switching conditions with a magnetically coupled auxiliary voltage source which is derived directly from the inverter filter inductor. Theoretical analysis of the inverter operation is presented and it is verified experimentally from a 1kW, 40kHz, laboratory prototype. The obtained experimental results prove the reliability of the proposed family of ZCZVT inverters.
Relationship between muscle fiber characteristics and meat quality parameters in Turkish native goat breeds
Authors: Sirin Emre
Published: October 2018

This study was conducted to determine muscle fiber characteristics and their effect on some meat quality parameters in Longissimus dorsi (LD) and Semitendinosus (ST) muscles from kids of some Turkish native goat breeds. Male kids of Hair (n=6), Angora (n=6), Kilis (n=6) and Honamli (n=6) (pure breeds) were used as experimental animals. All kids were slaughtered at 3 months of weaning age and muscles samples were collected for determination of type I, IIA and IIB muscle fibers and some meat quality parameters. It was found that type IIA fiber number of Hair and Honamli kids were higher than those of other breeds in LD muscle. Similarly, Hair kids had higher number of (P less than 0.05) type IIA in ST muscle compared to other breeds. Generally, there were negative correlations between tenderness, pH and number of muscle fiber types in LD and ST muscles of all breeds (P less than0.05). Also, there were positive correlations between intra muscular fat and number of muscle fiber types in LD muscles of all breeds (P less than 0.05). Conclusively, kids of Turkish native goat breeds had different muscle fiber characteristics which can affect meat quality.
Hematological responses of common carp Cyprinus carpio administered with Neem (Azadirachta indica) leaf extraction
Authors: Holeyappa Shanthanagouda Admane , Kaur Yadwinder , Dhawan Asha , Thammegowda Naveenkumar Bilekallu
Published: October 2018

The study investigated the effect of Neem Leaf Extract (NLE)—a herbal product on hematological parameters of common carp, Cyprinus carpio. Common carp fry were fed on diets having different levels of NLE [no NLE (D1), 0.25(D2), 0.5(D3), 1.0(D4), 1.5(D5), 2.0(D6) g/kg in basal diet containing rice bran and mustard] for 180 days in outdoor tanks. The results revealed an increase in TEC, TLC and PCV in groups D2-D6 compared to control (P less than 0.05), but increased PCV was observed only in D2, D3 and D4 groups. Further, increasing trend for Hb content was observed from D2-D6 irrespective of NLE levels. The MCV values decreased with increase in levels of NLE in contrast to MCHC, whereas MCH considerably varied among the treatments. Significantly increased total protein and globulin was also observed while albumin to globulin ratio did not show any response in any of the treatments. Collectively, these observations support the hypothesis that the response of hematological parameters to NLE treatment is regulated via both positive and negative feedback mechanisms, with differential modulations based on the NLE levels. The results imply that NLE can boost the immune system via hematological parameters by increasing TEC, TLC, PCV, Hb at certain levels.
Effect of dimethyl sulfoxide (dmso) on preseservabilty of boar semen at 15°c
Authors: Singh B. , Tamuli M. K. , Sinha S. , Tamuly S. , Sarma A.K. , Sarma A.K. , Bhuyan G.
Published: October 2018

A total of 30 ejaculates comprising five from each of six boars (three Hampshire and three Rani breeds) were collected to study the effect of DMSO (Dimethyl sulfoxide) on preservability and fertility of boar semen at liquid state at 15°C in ten extenders viz.Androheps+Strepto-penicillin+Gentamycin, GEPS+Strepto-penicillin+Gentamycin, Androheps + 1% DMSO, Androheps + 0.7% DMSO, Androheps + Gentamicin sulfate + 0.5% DMSO,Androheps +Strepto-penicillin + 0.5% DMSO, GEPS (Glucose-sodium salt of EDTA-potassium sodium tartrate-sodium citrate dihydrate) + 1% DMSO, GEPS+0.7% DMSO, GEPS+Gentamicin sulfate+0.5% DMSO and GEPS+ Strepto-penicillin + 0.5% DMSO extenders. After holding semen each ejaculate was split into 10 parts and extended (1:3) with the said experimental dilutors and preserved at 15°C in refrigerator up to 168 hr. The evaluation of sperm motility and Hypo-osmotic swelling test (HOST) of preserved semen samples were recorded at 0 (just after extension), 24, 48, 72, 96, 120, 144 and 168 hr as per the standard method. The results indicated that the addition of DMSO in extenders had no significant effect on preservability of boar semen at 15°C.
Effect of probiotics mix supplementation on haemato-biochemical parameters and bacterial faecal shedding in Corriedale lambs fed paddy straw based complete feed
Authors: Sheikh G. G. , Masood Danish , Ganai A. M. , Muzamil S. , Afzal Y. , Ahmad H. A.
Published: October 2018

Growth trial of 90 days was conducted on 12 male Corriedale lambs, divided in two groups of six lambs each, to study the effect of feeding of paddy straw based complete feed supplemented of probiotic mix (Saccharomyces cerevisiae 2×1010cfu/g + Lactobacillus acidophilus 6×109cfu/g) in equal ratio @ 3 % of DM, as per the in vitro studies, while complete feed without probiotics served as control. There was significantly (P less than 0.01) higher haemoglobin concentration, RBC, WBC and monocyte count in animals fed probiotic mix than control, with no significant effect on PCV, lymphocyte, eosinophill and neutrophill count. Blood glucose, total serum protein, albumin, globulin, BUN and serum creatinine values were statistically higher in probiotic mix supplemented animals. Lambs fed with probiotics show significant (P less than 0.01) decrease in serum cholesterol, LDL-cholesterol and triglycerides with increment of HDL-cholesterol than animals fed unsupplemented diet, with no effect on enzyme activities of liver enzymes. The lambs fed on probiotic mix shows significant reduction in faecal shedding of E. coli and total coliform with firm pellets faecal consistency. Probiotic mix has great potential to beneficially affect the haemato-biochemical parameters and gut micro-flora and hence improve physiological health status of animals.
Analysis of certain blood biochemical parameters in relation to oxidative stress in chronic mitral valve insufficiency of dogs with heart failure
Authors: Indhu M.S. , Sesh P.S.L. , Loganathasamy K. , Jeyaraja K. , Padmanath K. , Pandiyan V.
Published: October 2018

Chronic mitral valve insufficiency (CMVI) is the most common acquired heart disease in dogs. In heart failure, the cellular oxygenation and metabolism are affected, which leads to the production of free radicals. Free radicals damage DNA, lipid and protein molecules in cells. In the present experiment, blood samples were collected from CMVI dogs with heart failure and were compared with the results obtained from healthy dogs. A significant increase in the levels of xanthine oxidase, AST, LDH and CK and decrease in the activity of catalase were noticed in CMVI dogs when compared to healthy dogs, which revealed overall cardiac and skeletal muscle damage in CMVI dogs. Results of biochemical parameters revealed an increase in urea level and decrease in sodium, potassium, and calcium levels in CMVI dogs as compared to control dogs, all of which indicate cardiac damage in dogs. Study on hematological parameters revealed a significant decrease in Hb, PCV, RBC and platelet counts and an increase in total WBC counts and percentage of neutrophils, decrease in percentage of the lymphocyte and monocyte in CMVI dogs than control. These results indicate secondary phenomenon to heart failure. The present research data indicates the usefulness of these biomarkers in the diagnosis and prognosis of CMVI with heart failure in dogs.
Seasonal variations in enzyme histochemistry of accessory sex glands in buffalo bull
Authors: Sarangi Samikshya , Gupta Anuradha , Bansal Neelam , Uppal Varinder
Published: October 2018

The present study was conducted on vesicular, prostate and bulbourethral glands of buffalo bullcollected from the abattoir immediately after sacrifice during winter and summer season. The cryostat sections of 10-12 µm thickness were obtained at -23°C and were incubated in different substrates for demonstration of phosphatases, oxidoreductases and estrases. During winter season, the moderate to strong activity of AKPase in acinar cells and ductular epithelium was observed in vesicular, weak in prostate, but the activity was not demonstrated in bulbourethral gland, however the blood vessels showed moderate AKPase reaction in all the glands. A moderate activity of SDH, LDH and G-6-PD was observed in glandular and ductular epithelium of vesicular gland and weak to moderate activity in prostate and bulbourethral glands. The glandular and the ductular epithelium of all the glands studied were strongly positive for NADH and NADPH, whereas a weak activity for NSE was observed. There was decrease in the activity of all the enzymes during summer season which may be related to decrease physiological activity in this season.
Histomorphological studies on the testis of local pig (Zovawk) of Mizoram
Authors: Singh Th. Shitarjit , Kalita Pranab Chandra , Choudhary Om Prakash , Kalita Arup , Doley Probal Jyoti
Published: October 2018

The present study was designed to elucidate the histomorphology of the testis of adult Zovawk. In the present study, the collagen and reticular fibres were abundant in tunica albuginea and interstitial tissue surrounding the seminiferous tubules. However, few elastic fibers occurred in the capsule and only in the blood vessels of both the testis in Zovawk. The different micrometrical values with regard to thickness of testicular capsule, diameter of seminiferous tubule, height of seminiferous tubule, number of leydig cells, spermatogonia, germs cells per mm2 were found to be higher in the left testicle as compared to right one. There was no-significant difference observed in the right and left testes of Zovawk.
The mutations within MC1R, TYRP1, ASIP genes and their effects on phenotypes of coat color in wild pigs (Sus scrofa ussuricus )
Authors: Yang G. L. , Shi C. X. , Fu D. L. , Li Z. Q.
Published: October 2018

Animal coloration is a powerful model for studying the genetic mechanisms that determine animal phenotypes. But, there has not been comprehensive characterization of the molecular basis of the complex patterns of coat color phenotype variation in wild boars. This study results indicated that the wild-type allele E+ of the MC1R gene was a dominant allele in wild boars and was not responsible for black, brown or other coat color phenotypes. A novel mutation c.695 T > C was identified in the 3¢-UTR of the ASIP gene. The association analysis showed that the C mutation allele was highly significantly associated with wild-type coat colors between wild boars and Western pig breeds (P=1.35E-33). A non-synonymous g.2254 G > A substitution was found in exon 2 of the TYRP1 gene (p.143His>Arg). The association analysis demonstrated that the G mutation allele was also significantly associated with wild-type coat colors between wild boars and Western pig breeds (P = 5.09E-10). In short, a few mutation sites in MC1R, ASIP, and TYRP1 genes were identified and surveyed several polymorphisms molecular variations in Chinese wild boars. In our identified mutations have caused the morphological diversity in wild boars, but did not influence coat color phenotype variation in some domesticated pig breeds. The conclusion was obtained that some mutations in color-associated genes were associated with wild-type coat colors in wild boar population, and that similar coat colorations observed in domesticated pig and wild boars can be the product of underlying differences in the genetic basis of color variants.
Perioperative analgesic efficacy of constant rate infused tramadol hydrochloride as an adjunct to postoperative ketoprofen in ovariohysterectomized bitches
Authors: Ugwu N. E. , Eze C. A. , Udegbunam R. I. , Nnaji T. O.
Published: October 2018

The study evaluated the peri-operative analgesic efficacy of tramadol administered by constant rate infusion as an adjunct to ketoprofen in ovariohysterectomized bitches. Pre- and postoperative assessment of pain was made using physiologic parameters, glucose, cortisol, pain score and body weight. Dogs were randomly assigned to one of the three groups using the protocol: 1.0mg/kg/hr, 2.0mg/kg/hr of CRI tramadol and control. Ketoprofen (5mg/kg, SC) was administered at one, twenty-four and seventy-two hours post-OVH to all the dogs. Mean glucose and cortisol levels of group 3 dogs were at intra- and at one-hour post-OVH higher (pliss than 0.05) than those of groups 1 and 2. Mean pain score of group 3 was significantly higher (p less than 0.05) than those of groups 1 and 2 at one, four, twenty-four and seventy-two hours post-OVH. The use of CRI tramadol at doses of 1.0mg/kg/hr and 2.0mg/kg/hr attenuated rise in pain markers and produced balanced analgesia as an adjunct to ketoprofen.
Shrimp shells, Chitin and chitosan powders effect on growth of Lycopersicon esculentum and their ability to induce resistance against Fusarium oxysporum f.sp. radicis-lycopersici attack
Authors: Amine Rkhaila , Khadija Ounine
Published: October 2018

The potential of co-products of shrimp shells on the germination parameters, growth, and for inducing defense reactions in tomato (Lycopersicon esculentum) plants inoculated with Fusarium oxysporum f.sp. radicis-lycopersici (FORL) was investigated in vitro and in vivo.It was found that chitosan at 50mg/l increased the germination percentage by 2.66%; the shrimp shells powder at 50mg/l was best in increasing the length of radical and length and weight of hypocotyl in vitro. In Vivo, chitosan at 50mg/l increased length, fresh/dry weight of aerial and radicle parts compared to control. An inhibition of FORL growth in vitro was obtained by addition of chitosan at 100mg/l. In addition, chitin at 25 mg/l decreased the foliar alteration index by 73.34% compared to control.
Soil morphogenesis diversity at the southern flank of Merapi Volcano, Indonesia five years post-eruption
Authors: Aini Lis  Noer , Sunarminto Bambang Hendro , Hanudin Eko , Sartohadi Junun
Published: October 2018

This study aims to find out the soil morphology diversity at the southern flank of Mt.Merapi Yogyakarta, Indonesia. The field research was conducted using purposive sampling method where each site of geomorphological unit as representing of the cone, upper, middle and lower slopes of Mt.Merapi. Poligenesis of the soil morphology was observed at pedon P1 with composition of the upper and buried soil was Typic Hapludands-Typic Hapludands, P3 (Andic Eutrudepts-Vitrandic Udorthents), P4 (Vitrandic Udorthents -Typic Hapludands), and P5 (Andic Eutrudepts-Andic Eutrudepts). Whereas the monogenesis of the soil morphology was observed at pedon P2, P6, P7 and P8 with subgroups of Typic hapludands, Andic Eutrudepts, Andic Dystrodepts and Typic Udorthents, respectively. Soil morphogenesis diversity (polygenesis) shown by the presence of a pedon having more than one soil profile was not a limiting factor for crop roots growth, so the agro-ecosystem recovery process was relatively fast.
Growth, yield and water use of drip irrigated cassava planted in the late rainy season of North Eastern Thailand
Authors: Polthanee A. , Srisutham M.
Published: October 2018

Field experiment was carried out at Agronomy Experimental Farm, Faculty of Agriculture, Khon Kaen University in 2015-2016 to investigate the response of cassava to supplementary irrigation during the dry season month. The experiment was laid out in split plot design with four replications. The main plots comprised two cassava varieties (Huaybong 80 and Rayong 11). The sub l included four levels of drip irrigation [I-20, EV-40 mm (crop received 20 mm of water when daily cumulative pan evapolation value reached 40 mm during the dry season months)]; [I-20, EV-60 mm] ; [I-10, EV-40 mm] ; [I-10, EV-60 mm] and [I-10] (cassava under rainfed condition without additional irrigation)]. Results indicated that irrigation at (I-20, EV-40 mm) produced maximum the fresh (52 t ha-1) and dry (22 t ha-1) storage root yield. Huaybong 80 variety a gave significantly higher the storage root yield than that of Rayong 11 variety. The highest starch content also was obtained in the (I-20, EV-40 mm) treatment. There was no significant difference in the starch content between the two cassava varieties. Water were applied in treatment [I-20, EV-40 mm], [I-20, EV-60 mm], [I-10, EV-40 mm] and [I-10, EV-60 mm] was an average 299 mm, 194 mm, 150 mm and 97 mm, respectively during the growing season. Water use efficiency was the highest (35.3 kg ha-1 mm-1) in the [I-20, EV-60 mm] treatment.
Livelihood security of agricultural labour households in rainfed region of north-Karnataka – An economic analysis
Authors: Venu B.N , Umesh K. B. , Gujanana T. M.
Published: October 2018

A livelihood comprises the capabilities, assets (social and material resources) and activities used by households for means of living. A livelihood index has been developed for agricultural labour households, based on the primary data. Six different sub-indices obtained are indicators of Economic, Food, Health, Education, Habitat and Social network Status for the rainfed regions of Bijapur district. Finally, a composite livelihood security index has been developed which indicates the livelihood status of migration and non-migration labour households in the study area. It is found that, migration households were moderately secured in terms of food security, economic security, education security and social network security. It was poor in case of health and habitat security. The composite livelihood security index (0.791) indicated that migration households were moderately secured in terms of livelihood. Non-migration labour households, the composite livelihood security index (0.645) indicated that households were less secured. In terms of food security and economic security, moderately secured and highly secured in education. In terms of health, habitat, social networks security non-migration labour households were less secured.
Comparative analysis of efficacy and longevity of different pheromone baited septa for control of Gram Pod Borer in chickpea in Uttaranchal, India
Authors: . Kalpna Varshney
Published: October 2018

Pheromones are species specific chemicals which are biodegradable, eco-friendly, chemically safe, and required in ultra low dosages and used as efficient tool for insect pest management. Efficiency of pheromone traps used for pest control depends on air borne pheromone stimulus, in specific ratio and concentration released from septa. Field longevity of synthetic lures for Helicoverpa armigera (Lepidoptera: Noctudae) and efficacy of different septa were evaluated by mass trapping experiments in Pantnagar, India.The longevity (shelf life) of septa impregnated with pheromone components (Hexadecenol) and 97:3 blend (Z-11-hexadecenal and Z-9-Hexadecenal) were studied by gas chromatographic estimation of the residual pheromone remaining on the septa at different time interval and temperature conditions. The rubber eraser septum is found to be most effective one. This study is helpful to popularize the pheromone technology among the farmers as they can store the already loaded septa and use them for control of H.armigera.
Antagonistic activity of cellulase enzyme produced by Trichoderma Viride against Xanthomonas Citr
Authors: Jatav Prabhat , Ahirwar Sonu Singh , Gupta Abhishek , Kushwaha Kirti , Jatav Sadhna
Published: October 2018

Citrus canker is a bacterial disease which occurs in citrus (lemon) species produce by Xanthomonas especially X. citri. The infection occurs on the lesions of leaves, stems, and fruits of citrus trees, it also occurs in other plants such as orange, grapes. The main goal of this study was to prevent the lemon (citrus) disease such as citrus canker by using some cellulase enzymes produces by soil fungi. In the present study, we isolated soil fungi Trichoderma viride, which produces cellulase enzyme these have higher antibacterial activities against plant pathogen such as X. citri. This enzyme produced by T. viride by using fermentation method, quantified by DNAS method and used as a bio-control agent against X. citri. They also isolated and characterized X. citri. In the last step of the study they have checked antibacterial activity of cellulase enzyme against X. citri. The present study concluded that cellulase enzyme produced by T. viride shows higher antibacterial activity against X. citri when treated it at 100°C.
Trend analysis of production and productivity of major crops and its sustainability: A case study of Haryana
Authors: Panwar Savita , Dimri Anil K.
Published: October 2018

Haryana is a small state having 4.4 million hectares of land only, yet it has become pioneer in production of food crops in the country. The time series data collected from the secondary sources of information from 1966-67 to 2015-16 showed a significant increase in total cropped area, irrigated area and cropping intensity. The production of major crops of wheat, rice, sugarcane, cotton and oilseeds and productivity of food crops of wheat and rice increased progressively due to adoption of high-tech agricultural practices but the productivity of wheat and rice decreased in later years due to change in agricultural practices including adoption of organic farming. The state government has taken several initiatives to protect and better management of resources for the sustainability of production and productivity of major crops.
Over expression of stress responsive Pennisetum glaucum 47 helicase (PG47) improves stress tolerance in groundnut (Arachis hypogaea L)
Authors: Mahantesh Sujata , H.N Ramesh Babu , Ghanti Kirankumar , Prasad T. G. , Reddy Malireddy K. , Raddy P. C.
Published: October 2018

RNA helicases function as molecular motors that rearrange RNA secondary structure, potentially performing roles in any cellular process involving RNA metabolism in an ATP-dependent manner and play an important role in protein synthesis. Pennisetum glaucum 47 (PG47) RNA helicase overexpressed in groundnut (Arachis hypogaea L.) cultivar GPBD-4 improved drought tolerance. The transgenics plants were confirmed for presence, expression and stable integration by Kanamycin screening, genomic DNA PCR, RT-PCR and Southern analyses respectively. In T3 generation, the promising transgenic events were identified based on stress tolerance and improvement in productivity. The transgenic events showed enhanced stay-green phenotype and increased chlorophyll stability under drought stress. The transgenics also showed reduced chlorophyll retardation under NaCl, PEG and etherel-induced stress conditions. Transgenic plants showed increased yield than wild type under stress conditions. Results suggested that PG47 RNA helicase contributing for enhanced drought-adaptive traits and improved productivity under water-limited conditions.
Biodegradation of polymer effluent and its reutilization for growth of ornamental plant
Authors: Noorjahan C. M. , Harinee R. , Fathima U. Irfana , Kalaiselvi S. , Raziya A. , Sowmiya B.
Published: October 2018

One of the most challenging current problems arising with rapid industrialization, is the proper disposal of waste products. Polymer effluent released from polymer industry is one of the major sources of environment pollutants as the concentration of harmful materials in the waste water was extremely high. Bioremediation offers a simpler, cheaper and more environment friendly option to traditional methods of remediation. Bioremediation is the microbial clean-up approach. Hence the present study was carried out to analyse Physico-chemical parameters like colour, odour, pH, EC, TSS, TDS, BOD and COD of untreated polymer effluent and was degraded using bacteria. The results of the analysis of the physico chemical parameters revealed that untreated polymer effluent was yellow in colour with pungent odour. pH was alkaline with high organic load such as EC, TSS, TDS, BOD and COD which were higher than the permissible limits of CPCB (1995) for its disposal indicating high pollution potential of the waste. Since the untreated polymer effluent has high organic load, disposal of such waste water into the environment without proper treatment pose hazards to environment. Hence Escherichia coli was used to degrade the untreated polymer effluent for a period of 96 hrs in a laboratory scale study. Results of analysis of degradation of the effluent revealed that colour and odour of 100% untreated sample has changed to almost colourless and odourless nature. pH has changed from alkaline to neutral and also showed marked reduction (12.35% - 99.5%) of parameters in biotreated sample using Escherichia coli. The biotreated sample was reused for the growth of ornamental plant, Impatiens balsamina. The results of the growth study revealed that growth rate of the plant was increased in biotreated sample than in untreated sample.
Influence of organic manures and bio-dynamic preparations on growth, yield and quality of Khasi Mandarin (Citrus reticulata Blanco) in Mizoram, North-East India
Authors: . Malsawmkimi , Hazarika T. K.
Published: October 2018

An experiment was conducted during 2015-2017 at Mizoram University, Aizawl, Mizoram, Mizoram to standardize the organic nutrient management protocol for Khasi mandarin. The experiment was laid out in randomised block design (RBD) with eleven treatments viz T1: Farm yard manure(FYM), T2:Vermicompost(VC), T3 :Pig manure (PIM), T4: Poultry manure (POM), T5 : Neem cake (NC), T6:(FYM + CPP+ Bio Dynamic (BD)500 + BD 501), T7: (VC + CPP + BD 500 + BD 501), T8 : (PIM + CPP + BD 500 + BD 501), T9:(POM + CPP + BD 500 + BD 501), T10 :(NC + CPP + BD 500 + BD 501) and T11 : Control (RDF).The pooled analysis of two year data indicated that integrated application of FYM + CPP + BD 500 + BD 501 (T6) resulted in maximum plant height, plant girth, canopy spread and canopy volume. On the other hand, POM + CPP + BD 500 + BD 501 (T9) recorded maximum yield/ha. With respect to quality parameters, T7 (VC + CPP + BD 500 + BD 500) recorded the lowest moisture content during both the years of study as well as in pooled analysis, while, T6 (FYM + CPP + BD 500 + BD 501) recorded highest TSS, Ascorbic acid, TSS: acid ratio and lowest titratable acidity.
The influence of lead acetate and actinomycetes on germination and growth of vetch plant (Vicia sativa L.)
Authors: Trajkovic Radmila , Kostic Milica , Jaksic Tatjana , Vasic Predrag , Andjelkovic Snezana , Babic Snezana , Stamenov Dragana
Published: October 2018

The influence of different lead acetate concentrations (10 -5 M, 10 -4 M, 10 -3 M, 10 -2 M and 2 x 10 -2 M) both with and without presence of actinomycetes on germination and initial growth (root, leaf length and stem height) of vetch plant (Vicia sativa L.) was rated. Different lead acetate concentrations and actinomycetes (Streptomyces sp.) of 5, 7 and 9 breed’s types were used to treat vetch plant seeds. It was perceived that high lead acetate concentration of 2 x 10 -2 M has inhibitory effect on the studied parameters. Probes with the highest concentrations of lead with the presence of actinomycetes as much as 60% more seeds germinated compared to the probes without actinomycetes. Low lead acetate concentrations have stimulating effect on these processes, as applied in the presence of microorganisms, and in probes without inoculation.
Biochemical changes in naturally aged seeds of soybean genotypes with good and poor storability
Authors: Vijayakumar H. P. , Vijayakumar A. , Srimathi P. , Somasundaram G. , Prasad S. Rajendra , Natarajan S. , Dhandapani R. , Boraiah K.M. , Vishwanath K.
Published: October 2018

Seed deterioration during storage is associated with various metabolic and chemical alterations that vary among genotypes in soybean. In the present study, five genotypes with good storability viz., kalitur, MACS 1416, EC 18761, CO1 and DSB21 and five genotypes with poor storability viz., JS 71-05, DS 228, MAUS 61, NRC 93 and DSB 24 were selected and evaluated for biochemical changes to identify the best donors for storability. Among the genotypes, all the poor storer genotypes showed faster accumulation of free amino acids, free fatty acids and malondialdehyde content as a result of oxidative stress. Poor storer genotypes also showed the increased lipoxygenase I and II enzymes activity. All the good storer genotypes showed higher anti-oxidative enzymes activity causing slower lipid peroxidation. Among the good storers, kalitur showed favourable biochemical features for storability while MAUS-61 was identified as poor storer exhibiting less favourable biochemical features.
Managing chickpea wilt; Fusarium oxysporum through use of biorationals
Authors: Bkreena12@gmail.com Reena , Sharma M. , Jamwal S. , Kumar A. , Singh M. , Sinha B. K.
Published: October 2018

The three agro-climatic zones of Jammu were surveyed and potential pesticidal plants / plant materials were collected. Their methanolic extracts were prepared following the standard procedure of refluxing, distillation and fractionation. They were assessed for antifungal activity against chickpea wilt, Fusarium oxysporum f.sp. ciceri by poisoned food technique. Among the 64 plant parts assessed, Arisaema flavum root / tuber extract (4.0 mm) recorded lowest radial growth, followed by Boerrhavia diffusa root extracts (6.0 mm) and Arisaema flavum stem + leaves extract (8.0 mm). Accordingly, Arisaema flavum roots / tubers extract also exhibited 95.55% and its leaves recorded 91.00% inhibition. Boerrhavia diffusa stem and root extracts again exhibited 94.5 per cent inhibition, while Achyranthes aspera root exhibited 91.11% inhibition. These extracts / fractions have great potential to be developed as botanical pesticide that can greatly benefit human beings in multifarious ways.
Pigeon pea (Cajanus cajan) an important food legume in Indian scenario – A review
Authors: Sarkar S. , Panda S. , Yadav K. K. , Kandasamy P.
Published: October 2018

According to Indian Institute of Pulses Research Vision document, India’s population is expected to touch 1.68 billion by 2030 and the pulse requirement for the year 2030 is projected at 32 million tonnes with anticipated required annual growth rate of 4.2%. Pigeon pea is an important legume crop cultivated across several countries throughout the tropics and subtropics. They are cultivated in India, Malaysia, Indonesia, the Philippines, Caribbean, East and West Africa. Commonly known as ‘Arhar’ in Northern India, this protein rich pulse crop has growing demand in Asia. Among the pulses pigeon pea is the second most important kharif grain legume after chickpea in India and grown predominantly under rainfed conditions. The kernels are nutritionally rich containing 20-22% protein. Its cultivation would be able to provide 40-60 kg N/ha to the subsequently grown crop. The leaves and immature stems can be used as a green manure. Fallen leaves can also be used as mulch and thus help to enhance the water holding capacity of soil. Its beneficial effect as an intercrop has also been reported. Sometimes ground dry peas are mixed with wheat flour just to improve the flour quality and its protein content. Additionally, pigeon pea shares a vital part in India’s pulse import and export. Keeping all these in view the present review depicts the various aspects of pigeon pea cultivation and its status in Indian trade on pulse.
Exploring the genetic diversity and population structure of Turkish common bean germplasm by the iPBS-retrotransposons markers
Authors: Aydin Muhammet Fatih , Baloch Faheem Shehzad
Published: October 2018

Present study was aimed to investigate the genetic diversity and population structure of Turkish common bean germplasm. A total of 96 bean genotypes were characterized with iPBS-retrotansposons that yielded a mean polymorphism information contents of 0.8. Mean gene diversity and Shannon information index were 0.14 and 0.25, respectively. Neighbor joining analysis divided the bean genotypes into two main group (A and B) according to their geographical regions, growth habits and seed size. Bingol-l7, Sivas-14 and Hakkari-11 genotypes were found very distinct and can be used as candidate parents for the bean breeding. The higher efficiency and reproducibility of iPBS-retrotransposons was witnessed in common bean as compared to earlier studies using the same marker system. Results of this study will boost up the investigators for genotyping the larger germplasm of common bean with minimum laboratory infrastructure in developing and least developed countries.
On the Approximation to Complex Matrix-valued Functions by Using Solutions of Partial Complex Differential Equation in Matrix Form
Authors: Sağlam Özkan Yeşim , Hızlıyel Sezayi
Published: October 2018

In this work, we seek  the solutions of the equation   $\frac{\partial w}{\partial \bar{\phi}}=Aw+B\overline{w}$with linear coefficients $A=\alpha^{(0)}+\alpha ^{(1)}\phi +\alpha^{(2)}\overline{\phi}$, $B=\beta ^{(0)}+\beta ^{(1)}\phi +\beta ^{(2)}\overline{\phi}$,such that using this solutions we approximated to complex matrix valued function which possess the form $w=K^{(0)}+\phi K^{(1)} +\bar{\phi} K^{(2)}$. Here $\phi$ is a generating solution for $Q$-holomorphic functions.
Evaluation of Periodontal Tissues Condition in Undergraduate Medical Students with Different Anxiety Levels
Authors: Pavliuk Tetiana , Rozhko Mukola , Panchak Oksana
Published: October 2018

The aim of the study was to investigate the relationship between the level of anxiety with periodontal tissue lesions in undergraduate students at a medical university. Observations were performed by medical students of the second year of study. There was used H. Ayzenko’s questionnaire to determine the level of personal anxiety. The evaluation of the condition of periodontal tissues was performed using the appropriate indexes: the papillary-marginal-alveolar index, the periodontal index, the Schiller-Pisarev’s  test (Svrakov’s iodine number), and sulcus bleeding index. The results of the study showed a direct dependence of the manifestation of periodontal tissue diseases on the level of psycho-emotional stress. Analyzing the PMA index it was noted that the higher level of anxiety, the higher number of this index and, accordingly, the more distinct signs of inflammation are clear: with low level – 4.63±2.58%, with an average level – 28.42±1.29% and at a high level – 41.6±2.46%. The quantitative significance of the periodontal index also depends on the degree of anxiety in the students: the lowest rate was in the students of group І with a low level of anxiety (0.15±0.08); the indices of groups ІІ and ІІІ are 0.97±0.04 and 1.35±0.07 respectively. The Schiller-Pisarev’s test showed that the higher anxiety level of students has the higher number of this index. Analyzing the data of index of gum’s bleeding, there was observed an increase in it, depending on the degree of anxiety (p<0.001).
PISA-LIKE: FOOTBALL CONTEXT IN ASIAN GAMES
Authors: Permatasari Ranni , Putri Ratu Ilma Indra , Zulkardi Zulkardi
Published: October 2018

This study aimed to develop a set of PISA-like mathematics problems on uncertainty and data content using football as a context which was valid, practical and had potential effects on students’ mathematical literacy ability. The method used in this study is design research with development studies type which had two stage: the preliminary and formative evaluation. Tenth-grade students of senior high schools in Palembang were involved in this research. This study produced a set of PISA-like mathematics problems at 3, 4, and 5 level. In this case, student’s strategies used some ability in solving one of the problems, namely mathematizing, representation, and communication ability. There were 16 out of 35 students using mathematizing and communication ability, 10 out of 35 students using representation and communication ability, and 9 out of 35 students only using communication ability. Also, the results of the interview with some students showed that they liked to do such PISA-like mathematics problems because they could improve their literacy ability in solving the PISA-like problem.
TRIGONOMETRIC CONCEPTS: PRE-SERVICE TEACHERS’ PERCEPTIONS AND KNOWLEDGE
Authors: Nabie Michael J. , Akayuure Peter , Ibrahim-Bariham Ussif A. , Sofo Seidu
Published: October 2018

This paper explored pre-service teachers’ perceptions and knowledge of trigonometric concepts. Convenience sampling technique was used to select a sample of 119 (25 females, 94 males) second year science/mathematics pre-service teachers from two Colleges of Education in the Northern Region of Ghana. Trigonometry Perception Questionnaire (TPQ) and Trigonometry Assessment Test (TAT) were used to collect data on pre-service teachers’ perceptions and conceptual knowledge of trigonometry. Data were coded and keyed into Statistical Package for Service Solutions (SPSS version 20) and analysed using descriptive statistics. The results suggested that pre-service teachers perceived trigonometry as abstract, difficult and boring to learn; and had limited conceptual knowledge of basic trigonometric concepts. Consequently, more that 50% of them were unable to construct and reconstruct the appropriate mental structures for meaningful understanding to enable them respond to important basic trigonometry tasks. To achieve quality mathematics education, teacher educators must change their instructional practice and teach for understanding.  Since understanding is the key to teacher’s instructional actions, processes and knowledge, we recommend teaching trigonometry for understanding during teacher preparation.
THE MATHEMATICAL ARGUMENTATION ABILITY AND ADVERSITY QUOTIENT (AQ) OF PRE-SERVICE MATHEMATICS TEACHER
Authors: Hidayat Wahyu , Wahyudin Wahyudin , Prabawanto Sufyani
Published: October 2018

The Mathematical argumentation has been studied before, but no research has a focus on mathematical argumentation and adversity quotient of the pre-service mathematics teacher. This study is experimental research that aims to know and examine in depth about the influence of AQ of pre-service mathematics teacher toward the achievement of mathematical argument ability. The population of this study is the pre-service mathematics teacher in Cimahi City, West Java, Indonesia; while the sample is 60 pre-service mathematics teachers selected purposively. The instruments of this study are tests and non-tests. They are based on the assessment of good characteristics towards students' mathematical argumentation abilities, while the non-test instrument is based on the assessment of good characteristics towards AQ. The results of this research show that: (1) AQ gives positive influence to the development of mathematical argumentation ability of pre-service mathematics teacher with the influence of 60.2%, while the rest of it (39.8%) is influenced by other factors outside AQ; (2) The ability of mathematical argumentation of pre-service mathematics teacher is more developed on AQ of Climber type; (3) Students with the Quitter AQ type still tend to have less ability of mathematical argumentation.
EXPLORING THE EXPLANATION OF PRE-SERVICE TEACHER IN MATHEMATICS TEACHING PRACTICE
Authors: Murtafiah Wasilatul , Sa'dijah Cholis , Chandra Tjang Daniel , Susiswo Susiswo , As'ari Abdur Rahman
Published: October 2018

This study aims to describe the types of explanations made by pre-service teachers in mathematics learning. In this research, the types of explanations are used to describe the explanatory trends used by pre-service teachers in mathematics teaching. The descriptive qualitative research was chosen in this research. The research subjects are pre-service teacher as the students of Mathematics Education of PGRI Madiun University and Madura University who are studying Field Experience Practice. Of the 105 mathematics student, five students with a cumulative grade achievement of more than 3.50 were observed during the teaching practice at the school for approximately five meetings. The research data was obtained from observation, video recording, and interview. Data analysis was done through data condensation, data presentation, and conclusion/verification focused on pre-service teacher explanation on mathematics learning activity. The research findings indicate that the explanation used by the pre-service teacher in the mathematics learning starting from the most frequently used is the descriptive explanation (51,7%), giving of reason (36,2%) and interpretative (12,1%). Descriptive explanations are used to describe mathematical procedures. The type of reason-giving explanation is used to explain reasons based on mathematical principles. Furthermore, the interpretative explanation is used to explain the concepts and facts of mathematics.
REALISTIC MATHEMATICS EDUCATION IN COOPERATIVE LEARNING VIEWED FROM LEARNING ACTIVITY
Authors: Ardiyani Shila Majid , Gunarhadi Gunarhadi , Riyadi Riyadi
Published: October 2018

This study aimed at searching the different effect of Student Teams Achievement Division (STAD) and Think Pair Share (TPS) types of cooperative learning models with Realistic Mathematics Education (RME) approach on the students’ learning outcome viewed from students’ learning activity. The observation, interview, questionnaires, and tests were used to obtain the data which were then analyzed using two-way ANOVA. The result of research showed that: (1) STAD with RME approach provides better learning outcome than TPS with RME approach does; (2) the students with high learning activities have mathematics learning outcome better than those with medium and low learning activities; and (3) there is no interaction between the model of teaching and learning activities students to the results of the students’  mathematics learning.
THE ROLE OF PROBLEM-BASED LEARNING TO IMPROVE STUDENTS’ MATHEMATICAL PROBLEM-SOLVING ABILITY AND SELF CONFIDENCE
Authors: Hendriana Heris , Johanto Tri , Sumarmo Utari
Published: October 2018

This study is a pre test-post-test experimental control group design having a goal to analyze the role of problem-based learning on students’ mathematical problem-solving ability (MPSA) and self-confidence (MSC). The study involves 66 tenth grade students, a mathematical problem-solving test, a mathematical self-confidence scale, and perception of problem-based learning (PBL) approach scale. The study found that on MPSA, its gain, and on MSC students getting treatment with PBL approach obtained better grade than that of students taught by conventional teaching. The other findings, there was the high association between MPSA and MSC, and student performed positive opinion toward PBL approach.