bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and Characterization of Organically Soluble and Electrically Conducting Acids Doped Polyaniline
Authors:   Department of Chemistry, Nowrosjee Wadia College (Affiliated to Pune University), Pune-411001, Maharashtra, India, Chabukswar Vasant , Bhavsar Sanjay ,   Department of Chemistry, Nowrosjee Wadia College (Affiliated to Pune University), Pune-411001, Maharashtra, India
Published: December 2020

Emeraldin salt of polyaniline was synthesized by chemical oxidative polymerization method; this salt is soluble in common organic solvents. The obtained results are discussed with reference to lactic acid doped polyaniline. It has been observed that acrylic acid doped polyaniline is comparatively more soluble than polyaniline doped with lactic acid in common organic solvent such as m-cresol, NMP (N-methyl pyrrolidinone), DMSO, DMF, etc. The acrylic acid doped polymer prepared using lactic acid is comparatively more soluble in m-cresol and NMP than the polyaniline without acrylic acid. UV-Visible spectra for acrylic acid doped polyaniline reveals the coil conformation at higher wavelength along with sharp peak. This indicates that the conductivity of acrylic acid doped polyaniline is higher than that of polyaniline without acrylic acid. A broad and intense band at 3400–3300cm-1 (N–H stretching) and 1120–1225 cm-1 accounts for higher degree of doping and protonation of amine and imine N-atom. These results are well supported by the conductivity measurement – the conductivity of acrylic acid doped polyaniline is higher than in case of polyanіline without acrylic acid.
Developing the Evaluation Criteria for the Municipal Solid Waste Systems – Krakow Case Study
Authors:   Politechnika Krakowska, Instytut Inzynierii Cieplnej i Ochrony Powietrza 24, Warszawska str., 31-155 Krakow, Poland, Stypka Tomasz , Flaga-Maryanczyk Agnieszka ,   Politechnika Krakowska, Instytut Inzynierii Cieplnej i Ochrony Powietrza 24, Warszawska str., 31-155 Krakow, Poland
Published: December 2020

The article presents the methodology which can help the decision makers in evaluation of different municipal solid waste disposal systems. The results of the well known computer Integrated Waste Management model (IWM-1) are usually too fragmented to allow the final decision. The authors present the scientific background of the IWM-1 results integration. The results of the IWM-1 model analysis have been integrated into some specific categories that originate from the field of the Life Cycle Analysis (LCA). The authors propose 11 environmental categories plus the general ones calculated by the IWM-1 model. The presented categories describe the environmental impact of the analyzed system and are far easier to identify and understand by the public and by the decision makers. The developed methodology has been applied for the City of Krakow. The authors analyze two Krakow municipal solid waste disposal systems. The first system has been in operation for the last few years. The waste is collected and disposed at the landfill site while recycling and composting are implemented only in a limited scale. The second system presents the potential ultimate solid waste option for Krakow, where the waste is sorted extensively, then a significant part of organic fraction is composted, and the rest of the waste goes to the incinerator. The presented analysis compares these two systems. The authors use the results from the IWM-1 models for both systems as the input data to calculate the proposed impact categories. The final outcome is presented as graphs with the detail description of each stage of generation.
Mykhailo Dendiuk, Lyubomir Flud, Nazar Semenyshyn Software implementation of the construction of curves short-term strength of wood with biaxial stress state
Authors:   Ukrainian National Forestry University, Dendiuk Mykhailo , Flud Lyubomir ,   Ukrainian National Forestry University, Semenyshyn Nazar ,   Ukrainian National Forestry University
Published: December 2020

This paper is devoted to implementing the algorithm for constructing short-term strength curves of wood with biaxial stress states in the radial-tangential plane of structural symmetry. To implement this algorithm was developed software based on the Qt cross-platform toolkit, which allows to build and analyze short-term strength curves in the cross section of wood. The created program has a possibility to choose one of three failure criteria, a kind of wood, temperature and humidity distribution of lumber. The C++ program code is designed so that you can easily add another type of wood as well as a failure criterion. To display the curves, you can select table or graph mode. Graphs can be fixed on a graphics widget, and new ones can be added to compare to previous ones. Based on the analysis of the constructed curves, the ultimate stress state of the material in partial cases is established. In conclusion about expedient using some criteria to describe the strength characteristics of wood with strong and weak asymmetry of strength limits.
Neural network method for search of the active site of a wind power plant
Authors:   Lviv Polytechnic National University, Medykovskyi Mykola , Melnyk Roman ,   Lviv Polytechnic National University, Dubchak Maxim ,   Lviv Polytechnic National University
Published: December 2020

The article presents the results of the study of the possibilities of using neural networks to solve the problem of determining the active set of a wind farm (WF), taking into account the efficiency of each wind turbines (WT). The comparative analysis of the obtained results with the known methods of determining the active composition of WF, such as: the method of dynamic programming; the method of dynamic programming with increasing the load on the experimentally set percentage; modified method of dynamic programming. The advantages and disadvantages of using each of the studied methods in terms of the possibility of achieving a given generation power at the maximum efficiency of the selected WT are determined. It is established that when using recurrent neural networks to solve the problem of determining the active composition of WF, the minimum direct linear variation of the difference between the power to be generated and the actual power of the determined active set of WF is 2.7%. Under the same conditions, the use of other known methods, in particular, the modified method of dynamic programming ensures the achievement of this parameter at the level of 0.05%. This significantly increases the time to solve the problem. By computer simulation, it was found that under equal conditions, the time to solve the problem using neural networks - 0.04 s, and using a modified method of dynamic programming 3.4 s. The obtained results provide an opportunity to implement effective decision support systems in energy flow management.
Uso de cerâmicas à base de dissilicato de lítio
Authors: Lyra e Silva João Paulo , Mariano José Ricardo , Dantas Lucas Costa de Medeiros
Published: December 2020

Manufacturing of metal-free ceramic restorations become possible thanks to the emergence of reinforced ceramics and was consolidated with the development of adhesive materials and vitreous ceramic, allowing restorations adhesion to the dental structure. Lithium dissilicate-based ceramic offers features like, luting agent adhesion, resistance and optical effect, to be used without covering ceramics or thin restorations, maintaining their characteristics. The first ceramic systems were based on the development of infrastructure materials, replacing the metal, with increased reinforced crystalline phase which associated with the roofing porcelain can provide excellent aesthetics results without compromising the mechanical performance indispensable to restoration clinical longevity. Thus, we can perceive the importance of knowledge and planning of the steps to be followed in the process of ceramic restorations adhesion. The careful definition of protocols for the processes of moisture isolation, substrate preparation and restoration for the adhesion process are fundamental for clinical procedures to have reduced risk.
Improving Communication and Collaboration Skills via e-Learning Contents
Authors: Setyaningsih Rila , Abdullah Abdullah , Prihantoro Edy , Hustinawaty Hustinawaty
Published: December 2020

Developing e-learning content at a boarding university needs communication and collaboration skills. This study aims to discuss the strategy of improving communication and collaboration skills via e-learning content. This study uses a descriptive qualitative method. Data were collected through observation and interviews with stakeholders and lecturers. This study found that the strategy of improving the communication and collaboration skills via e-learning contents at the boarding university is conducted through four stages. The four stages are access, analysis, evaluation, and content creation: (1) The access is made by lecturers and students at the University of Darussalam Gontor in the form of the ability to use and utilize e-learning models. (2) The analysis phase is in the form of the ability of lecturers to find, change, and select information relevant to the learning process. The analysis phase also deals with the verification step (tabayyun) of the accuracy of the information. (3) Evaluation is in the form of preparation of learning contents adjusted to the real conditions occurring in the community or referred to as contextual learning. (4) Development of learning content is applied to five basic courses in the Communication Studies Program.
Biocontrol strategies to reduce the impact of Septoria tritici blotch in wheat
Authors: Cordo Cristina , Altamirano Rodrigo , Simón María Rosa , Stocco Marina , Lampugnani Gladys , Abramoff Cecilia , Kripelz Natalia , Mónaco Cecilia
Published: December 2020

Trichoderma strains are used as biofungicides for some plant diseases. The aim of this research was to evaluate the effectiveness of Trichoderma harzianum isolates, applied alone and in combination with fungicides, to control Zymoseptoria tritici, the causal agent of Septoria tritici blotch of wheat, and their impact on wheat yield and its components. To this end, field experiments were performed in 2010 and 2011 and 10 different treatments were applied. The disease severity was assessed by visual estimation of the leaf area affected by Z. tritici at the first node, anthesis and early dough growth stages. The best results for reducing the area under the disease progress curve (AUDPC) were “coated seed only with T. harzianum” and “coated seed plus two foliar application of T. harzianum”. Regarding the increase in yield gain and the improvement of yield components, the fungicide treatment applied at seedling, and tillering in 2011 provided significant increase. Respect the treatments with the application of T. harzianum the best was only one application as coated seed of the biocontroler alone showing yield responses similar to the ones obtained with the fungicide treatments. We recommended the coated seed alone because the protective effect lasts until the early dough stage of ripening. This application produced a comparable yield to that obtained with three applications of T. harzianum at different phenological stages of wheat with as well as with more than one application of commercial fungicide. We found a strong relationship between the number of kernels per spike and the wheat yield in 2011 as a consequence of the best environmental conditions for the disease’s occurrence. Contrary, it was shown a non-significant association between thousand kernel weight (TKW) and the wheat yield.
Dynamic Response of Single Pile Subjected to Different Frequencies in Gypseous Soil
Authors: D. Abd Noor , AbidAwn Safa H.
Published: December 2020

This paper exhibits an experimental study on dynamic response of a single pile under dynamic load which comes from motor placed on cap pile called a vibration source. This study used the effect of the dynamic movement of vibration on one pile, collapsible soil (gypseous soil) used in this study with 30% gypsum content. The experiment is performed in a dry and soak state. A solid steel pile with a slenderness ratio of 27 was inserted into the soil after preparing it in layers in a steel container (30 * 30 * 60) cm. The test was performed under a dynamic response to the different frequencies 10, 15, 20, and 25 Hz. The results showed that the speed, acceleration and displacement increase with increasing frequency of the vibration source in addition to that the values of speed, acceleration and displacement amplitude are less in the case of soaking compared to their values in the dry state.
The Impact of UnCalcined & Calcined Eggshell Powder as BioFiller for Polylacticacid
Authors: H. Abdulkareem Makarim , J. Bohan Azhar , A. Ati Ali
Published: December 2020

The present study includes preparation of eggshell powder from the waste eggshell by milling followed by calcination at 500°C under ambient atmosphere. Composites of uncalcined and calcined eggshell / PLA with contents of 10, 20 and 30 wt% prepared by casting method. The effect of uncalcined and calcined egg shell on structural and tensile properties of polylactic acid (PLA) were studied. The prepared composites were antibacterial tested against Escherichia coli and Staphylococcus aureus (S. aureus) bacteria. Results showed the crystallinity of the synthesized films induced by egg shell. Ultimate tensile strength increased gradually with increment of the filler content and the highest ultimate strength at 30 wt. % this may be attributed to good compatibility between the egg shell and the PLA. The results of bactericidal against Escherichia coli bacteria were lower for PLA and its composites as compared with staph aureus
Military and peace weekdays of the “merry soldier” in the great Patriotic war. V.P. Astafiev
Authors: Moiseeva Victoria
Published: December 2020

The article regards the image of the «merry soldier» through its significance for understanding the features of V. P. Astafiev’s artistic worldview. The story «The Merry soldier» is examined in the context of the evolution of the military theme in the writer’s work, shows how Astafiev creates on the autobiographical material the national scale image, containing self asking questions primarily related to the theme of the great Patriotic war.
Alexander Pushkin’s Daughter and Son-in-law: Life after Separatioin
Authors: Korneev Aleksey
Published: December 2020

The article is devoted to the last days of Mikhael Dubeltʼs life. Factual evidence presented in the text let us imagine how the participants themselves and their loved ones perceived the dramatic story of the Pushkin’s daughter Natalia devorce from Mikhael Dubelt.
Peculiar Use of the Arabic Letters tāʾ и ẓāʾ for Conveying Sounds Denoted by the Latin Letter t in Portuguese Manuscripts in Aljamia Dated Back to the 16th century
Authors:   St. Petersburg University, Tikhonova Oksana , Maznyak Maria
Published: December 2020

Unlike Spanish aljamiado (texts in Spanish in Arabic script), which is represented by a great number of texts, both theological and fictional, Portuguese Aljamia (texts in Portuguese in Arabic script) is represented only by eight documents. All of them belong to the period of Portuguese rule in the city of Safi, Morocco (1508–1542). In the article, we analyze the use of the Arabic letters tāʾ и ẓāʾ for conveying sounds denoted by the Latin letter t in the mentioned documents. D. Lopes included these two Arabic letters in the table of transliteration standards for Aljamia texts when publishing these manuscripts, even though the published texts contain other Arabic letters that D. Lopes transliterates as t. In this function, the letter tāʾ is most commonly used not only in Portuguese documents, but also in Spanish aljamiado. The letter tāʾ in Arabic texts denotes the occlusive obstruent voiceless consonant [t]. For conveying the sounds denoted by the Latin t, the letter ẓāʾ is also used. In Arabic, it denotes the obstruent voiced fricative consonant [ẓ]. In addition to tāʾ и ẓāʾ, D. Lopes transliterates the letter ṭāʾ as t. In Arabic, this letter denotes the occlusive obstruent voiceless consonant [ṭ]. The letters з̣а̄’(ظ) and т̣а̄’(ط) are not typical for Spanish aljamiado. In rare cases, we can find Arabic letters tha:’, ṣād, sīn, or dāl designated by the Latin t. There are a number of words where ṭāʾ and ẓāʾ alternate. In some cases, this alternation can be explained by a mistake made by the author or the copyist, who may have forgotten to put a full stop over the letter ẓāʾ. However, in addition to this alternation, we can find an alternation of ṭāʾ and tāʾ, which cannot be explained by the copyist’s lack of concentration. There are a number of words where all the indicated letters alternate: ṭāʾ, ẓāʾ, and tāʾ. In some examples, the letters tāʾ and ẓāʾ are used to convey the sounds denoted by the Latin letter d.
Slovak Translations of Russian Literature in Recent Years
Authors:   Comenius University in Bratislava, Kusa Mariya
Published: December 2020

The article is mainly devoted to the recent publications of translated Russian literature in Slovakia. In the first part of the article the situation of the 1990s which followed the decline of state management in editorial policy lasted from 1948 till 1989 is discussed. The influence of economic factors on book market turned most of the publishing houses to Western European and American literature. Thus in the last decade of the twentieth century mainly russian classics (Alexander Pushkin, Anton Chekhov, etc.) and the texts that could not be issuied until 1989 (Alexander Solzhenitsyn, Iosif Brodsky, “Doctor Zhivago” by Boris Pasternak) were published. The situation changed only in the new millennium, which was inspired by the phenomenon of the new generation of readers whom the available translations of russian literature were no longer suffucient, especially since they did not encounter the old ideologized approach to the selection of texts. Thanks to this, in recent years, Russian literature, including the most modern – Eugene Vodolaskin, Guzel Yakhina, etc., – again has managed to occupy the place in the Slovak cultural space that rightfully belongs to it.
Classical Antiquity in the Poetry of Sophia de Mello Breiner Andresen
Authors:   Moscow State Linguistic University, Makhortova Varvara
Published: December 2020

The article analyses the influence of Ancient Greek philosophy and mythology, noticeable in the poetry of Sophia de Mello Breyner Andresen. The results of the analysis show that Sophia de Mello’s poetry, seemingly non-philosophic, is based on the ideas close to the theories proposed by ancient philosophers from Pre-Socratics philosophers to Socrates, Plato and Aristotle. The ideas of the unity between the human being and the Universe, as well as Plato’s theory of the Truth, the Good and the Beauty gain the special importance for the Portuguese writer. The ancient myths are reinterpreted by Sophia de Mello. The Ancient Greece is represented as the symbol of harmony between the human being and the Nature.
PROJEKAT АB ZGRADE SA UPOREDNOM ANALIZOM PRORAČUNSKIH KONTROLA PREMA EVROPSKIM I SRPSKIM PROPISIMA
Authors: Pijanić Ivan , Lađinović Đorđe
Published: December 2020

U radu je prikazan projekat armiranobetonske konstrukcije višespratnog stambenog objekta, spratnosti (Po+Pr+5) na području Novog Sada, proračunat prema  Evrokod pravilnicima. Na kraju rada prikazana je uporedna analiza proračunskih kontrola prema Evropskim i Srpskim standardima.
STANJE I KARAKTERISTIKE RAZVIJENOSTI DRUMSKOG SAOBRAĆAJA U NAŠOJ ZEMLJI
Authors: Vukosavljević Nina
Published: December 2020

Predmet istraživanja ovog rada jeste analiza i značaj drumskog saobraćaja, njegovog stanja i karakteristika u Srbiji.
ANALIZA UTICAJA ZONA SA ZABRANOM PRETICANJA NA TROŠKOVE GORIVA
Authors: Nišić Jelena , Ruškić Nenad
Published: December 2020

Osnovni zadatak svakog saobraćajnog projekta jeste unapređenje uslova odvijanja saobraćaja na putnoj mreži. Na tri dionice dvotračnih puteva koje su analizirane u ovom radu, uočena je mogućnost smanjenja procenta zona sa zabranom preticanja, izmjenom horizontalne signalizacije na segmentima dionice gdje je utvrđena optimalna preticajna preglednost. U prvom dijelu rada izvršena je analiza uslova odvijanja saobraćaja na postojećoj i na novoprojektovanoj varijanti sve tri posmatrane dionice. Rezultati te analize su korišteni kao ulazni podaci za ekonomsko vrednovanje projektnog rješenja, gdje su analizirane uštede u troškovima goriva.
ANALIZA PROCESA IZGRADNJE BRENDA ELEKTRONSKIH NOVINA
Authors: Ilić Jovana
Published: December 2020

Značaj procesa brendiranja, vidljivi i nevidljivi elementi jednog brenda, uloge marketing komunikacije u uzgradnji brenda i neophodnost društvenih mreža za poslovanje su teme obrađene za svrhu procesa izgradnje brenda elektronskih novina. Sve veća popularnost građanskog novinarstva povezuje se i sa popularnim procesom u menadžmentu „co-creation“, koji je osnažen upravo zahvaljujući digitalnim tehnologijama. Predstavljen je i poslovni model Canvas na primeru brenda „Mejl“.
UNAPREĐENJE PROCESA TRANSPORTA U KOMPANIJI „FILI NST“ D.O.O
Authors: Filipov Milica
Published: December 2020

U ovom radu prikazan je analitički pristup sistemu organizacije transporta i unapređenje procesa transporta implementacijom softvera. Cilj ovih unapređenja je smanjenje troškova vremena i novca, kao i efektivna i efikasna organizacija transporta . Analizom svih kanala informacija u ovom uslužnom procesu formira se sistem kroz impelementaciju informaciono-tehnološkog rešenja koji utiče na profitabilnost ovog preduzeća.
NEKE KLASE FIBONAČIJEVIH BROJEVA
Authors: Marković Miloš , Ralević Nebojša
Published: December 2020

Predmet istraživanja rada su Fibonačijevi brojevi i njima slični kao što su: Lukasovi brojevi, Gibonačijevi brojevi i Tribonačijevi brojevi. Akcenat je stavljen na njihove osobine, kao i na njihove međusobne odnose, pre svega odnose Fibonačijevih i Lukasovih brojeva. Takođe su, u radu izložene neke zanimljivosti Lukasovih i Fibonačijevih brojeva i njihova prisutnost u prirodi. Dato je i uopštenje tih brojeva tzv. k-nači brojevi.
СПРИНКЛЕР ИНСТАЛАЦИЈA ЗА ГАШЕЊЕ ПОЖАРА У СТАМБЕНОМ ОБЈЕКТУ – ГАРАЖА
Authors: Драгин Ненад
Published: December 2020

У раду је приказан пројекат ауто­матске спринклер инсталације за гашење пожара водом за подземну гаражу стамбеног објекта. Де­таљно је описан принцип рада инстала­ције као и њене предности приликом уградње. У раду се водило следећим битним чињеницама приликом одабира аутоматског стабилног система за гашење пожара: битно узети у обзир намену предметног објекта као и класу пожарне опасности, ватроот­порност грађевинских елемената, уређаје за гашење пожара, сигурне методе рада и добру организацију.
PROCES RAZMENE PODATAKA TOKOM INTEGRACIJE INFORMACIONIH SISTEMA DVE BANKE
Authors: Trećakov Petar
Published: December 2020

U radu je prikazan proces razmene podataka tokom procesa integracije informacionih sistema Vojvođanske banke i OTP banke. Prikazana su teorijska razmatranja i ključni pojmovi vezani za migraciju poda­taka i ETL. Opisane su i prikazane metodologije i alati koji su korišćeni pri migraciji podataka – MSSQL, SSIS i Winforms.
Pengaruh Penambahan Semen Sebagai Bahan Stabilisasi Tanah Terhadap Kecepatan Permeabilitas Pada Tanah Pasir Kelempungan
Authors: Jusi Ulfa Jusi , Yasri Desi , Gabriel Giovani
Published: December 2020

Sand loamy soil is often used as construction material for buildings and highways. The disadvantages of this soil are low density and high permeability that can reduce the quality ofroad construction. One way to improve thequality of the soil is to stabilize it with cement added material. This study aims to determine how much the velocity of permeability of subgrade and to the addition of the Portland Cement Composite (PCC) mixture with variationsof 2%, 4%, and 6%. Calculation analysis method uses SNI M.22-1990-F. From the permeability test with the variation of native soil without cement mixture, the coefficient value is 10.025 cm/hour, with the addition of 2% cement the coefficient value is 7, 132 cm / hour, the addition of 4% cement is obtained coefficient of 6.245 cm /hour, the addition of 6% a value of 5.208 cm / hour was obtained. So it can be concluded that along with the increase in cement content for the clay sand mixture, the coefficient value is getting smaller
Identifikasi Faktor-Faktor Yang Mempengaruhi Keterlambatan Proyek Infrastruktur Kereta Cepat Jakarta-Bandung
Authors: Yurianto Yurianto , Kadri Trihono
Published: December 2020

High speed trains are designed with a speed of more than 350 km/ hour. High speed trains in Indonesia were built by PT Kereta Cepat Indonesia China (KCIC). The route served from Halim station in Jakarta to Tegal Luar Sation, which is located in Bandung district, has a length of 142.3 km. The construction of the fast train is divided into 4 (four) sections including sections 1, 2, 3 and 4. This fast train line consists of an elevated, tunnel and subgrade. Some construction works often experience delays due to complexity, land availability, design delays and availability of resources. Implementation time is an important factor in project management besides cost and quality. There are several factors that hinder the completion of the Jakarta-Bandung fast train project, so it is necessary to conduct a study on the inhibiting factors and solutions to minimize delays. The research method used is AHP weighting analysis. Based on the analysis and discussion, it can be concluded that from 61 potential aspects of the cause of the delay, there are 11 variables that affect the implementationtime of the Jakarta-Bandung fast train infrastructure development project based on the AHP ranking, including constraints in land acquisition for infrastructure buildings (63,144%), scheduling very strict projects by owners (61,771%), work order plans that are not well structured / integrated (61,570%), unavailability (materials, tools, labor) as needed (57,216%), shop drawings are not ready on time, no opportunity to learn (56,266%), changes in design / work details during implementation (56,170%), quite complicated project coordination (54,851%), negligence / delay by work sub contractors (53,081%), unclear technical specifications and less firm because it is too general (52,837%), there is a development permit procedure that is dip ery difficult for various parties (50,370%) and unfavorable weather conditions (49,680%)
Evaluasi Distribusi Air Baku Pada Waduk Wonosari di Kabupaten Bengkalis
Authors: Saily Randhi , Hamidi Ahmad
Published: December 2020

Wonosari Reservoir in Bengkalis Regency as a source of raw water to serve some residents of Bantan and Bengkalis districts. The volume of water in this reservoir has decreased annually due to the buildup of sedimentation. This research aims to analyze the relationship between raw water demand which is directly proportional with the projection of population growth and the availability of water in the Wonosari reservoir. The results of research conducted observational, in 2030 indicated a shortage of raw water with needs in Bantan and Bengkalis districts of 64.16 lt / sec and 215.96 lt/sec or equivalent with 5543.74 m3/day and 18658.09 m3/day which are the total of 24201.83 m3/day, while the availability of water is 94585.35 m3 and continues to decrease. Based on this analysis, it is necessary to anticipate the achievement of solutions to water availability so that needs can be met.
The demand of the Barnaul population for creation of cycling infrastructure
Authors: Antonovich Irina Vladimirovna , Kuzhim Natal'ya Viktorovna , Chukanova Tat'yana Viktorovna , Akhmedova Angelina Ruslanovna , Latkina Anastasiya Dmitrievna
Published: December 2020

The subject of this research is the demand of the Barnaul population for creation of cycling infrastructure. The development of cycling infrastructure not only contributes to solution of the problems of any modern city, but also creates a favorable ecological and social environment. This is  illustrated by such indicators as public health, life expectancy, and increase of working age. Moreover, the ecologically friendly urban environment is beneficial for the development of tourism. Using the quantitative method (questionnaire-based survey), the authors were able to find out the opinion of the Barnaul residents on the creation of urban infrastructure. The research results clearly demonstrate the demand of the Barnaul residents for creation of cycling infrastructure. The following conclusions were made: majority of respondents believe that the of cycle lanes and minimal maintenance service is required throughout the urban space; creation of cycling infrastructure can be a step toward designing a new comfortable urban environment and improve quality of life; implementation of cycle lanes into the urban space in such way that they would connect bedroom suburbs and central part of the city, can be most useful and effective. The conducted analysis testifies that the developed cycling infrastructure can improve transport and ecological situation in the city, but would not fully resolve the problems of socioeconomic nature.
Childhood, Loss and Art in Masefield’s Harker Novels
Authors:   Turin University, Spencer Alice
Published: December 2020

During the interwar years, John Masefield wrote three novels featuring a male protagonist with the surname “Harker” struggling against an adversary called Abner Brown. The first of these novels was written for an adult audience, the remaining two for children. The chronological sequence of these three novels and the relationship between their characters is far from clear, although the recurrence of names and places gives the impression that they should be read in connection with one another. In the present study, I will argue that the trilogy, whose settings correspond to specific periods of the author’s own life, can be read as a tripartite reflection on childhood, loss and the redeeming power of art
Nongovernmental China: 300 Million Migrant Workers and the NGO Response
Authors:   ,   Southern Methodist University, Dorfman Iam
Published: December 2020

Based on seventy weeks of field research in Beijing and Shenzhen, as well as a review of relevant literature, this dissertation explores the role of nongovernmental organizations (NGOs) in creating and redefining local economic relationships with China’s 300 million internal migrant workers. The founders/directors of these organizations run programs to improve migrants’ access to legal aid, education, and sense of community. Their perspectives, experiences, and decision-making provide significant insights into China’s paradoxical relationship with its migrant workers as well as changing state-society relations in the transition to capitalism.
Dignity in Decision-Making: Modernity and Social Navigation among Rural French Polynesian Youth
Authors:   ,   Southern Methodist University, Jarvis Laura
Published: December 2020

This research examines critical questions about the experiences of youth through the lenses of modernity, subjectivity, and the lifecourse. Growing up in a (post)colonial context of shifting definitions of adulthood, youth from the rural island of Rurutu, French Polynesia must navigate various decisions and transformations with little information to base their future aspirations on. This dissertation identifies dignity as the main motivating factor in youth decision-making, one that is constantly redefined as youth navigate shifting social fields. Dignity, as used here, is a target youth strive for in order to contest feelings of social precarity stemming from unaccommodating education systems and an unstable economic and political situation. Conceptually, the research is framed by Johnson-Hanks’ theory of vital conjunctures, which she defines as ‘the zone of possibility that emerges around specific periods of potential transformation in a life or lives’ (2002, 866). This research expands the examination of vital conjunctures through the use of what I will refer to as “vital conjuncture narratives.” These narratives allow young people to reflect on the turning points they find most important, instead of relying on those established by the anthropologist, thus revealing the frequency and flow of decisions as well as the experiences of transformation. This way of examining youth allows for narrative agency and problematizes the historically linear lifecourse concept of transitioning into adulthood. These narratives show that youth seek dignity through connections to tradition, land, and family, upholding their ties to Rurutu as a foundation upon which to build their lives.
Efficient Hierarchical Models for Reactivity of Organic Layers on Semiconductor Surfaces
Authors: Luy Jan-Niclas , Molla Mahlet , Pecher Lisa , Tonner Ralf
Published: December 2020

Computational modeling of organic interface formation on semiconductors poses a challenge to a density functional theory-based description due to structural and chemical complexity. A hierarchical approach is presented, where parts of the interface are successively removed in order to increase computational efficiency while maintaining the necessary accuracy. First, a benchmark is performed to probe the validity of this approach for three model reactions and five dispersion corrected density functionals. Reaction energies are generally well reproduced by GGA-type functionals but accurate reaction barriers require the use of hybrid functionals. Best performance is found for the model system that does not explicitly consider the substrate but includes its templating effects. Finally, this efficient model is used to provide coverage dependent adsorption energies and suggest synthetic principles for the prevention of unwanted growth termination reactions for organic layers on semiconductor surfaces.
Unraveling the Activity of Iron Carbide Clusters Embedded in Silica for Thermocatalytic Conversion of Methane
Authors: Dixit Gopal K. , Kumar Manish , Katiyar Ankita , P. J. Jansen Antonius , van Bavel Alexander , Agrawal Ravi , Shenai Prathamesh M. , Srinivasan Varadharajan
Published: December 2020

Isolated Fe-sites on silica substrate have recently been reported for direct and non-oxidative conversion of gaseous methane with high selectivity. The activated catalyst was proposed to be FeC2 cluster embedded in silica. Using a combination of density-functional theoretic methods and micro-kinetic modeling, we show that under the same reaction conditions (1223 K , 1 atm) FeC2 sites convert to FeC3 and the latter is instead responsible for the observed activity. We investigate the detailed mechanism of conversion of methane to methyl radical and hydrogen on FeC3@SiO2 under different conditions of methane partial pressure. We find that methyl radical evolution is the rate-determining step for the overall conversion. Our calculations also indicate that the conversion of embedded FeC3 to FeC4 competes with methyl radical evolution from the active catalyst. However, due to the higher stability of FeC3 sites, we anticipate that formation of higher carbides can be inhibited by controlling the hydrogen partial pressure.
A Novel High-Throughput FLIPR Tetra Based Method for Capturing Highly Confluent Kinetic Data for Structure-Kinetic Relationship Guided Early Drug Discovery
Authors: Khurana Puneet , McWilliams Lisa , Wingfield Jonathan , Barratt Derek , Srinivasan Bharath
Published: December 2020

Target engagement by small-molecules is necessary for producing a physiological outcome. In the past, a lot of emphasis was placed on understanding the thermodynamics of such interactions to guide structure-activity relationship. However, it is becoming clearer that understanding the kinetics of the interaction between a small molecule inhibitor and the biological target (structure kinetic relationship, SKR) is critical for selection of the optimum candidate drug molecule for clinical trial. However, the acquisition of kinetic data in high-throughput manner using traditional methods can be labor intensive, limiting the number of molecules that can be tested. As a result, in depth kinetic studies are often carried out only on a small number of compounds and, usually, at a later stage in the drug discovery process. Fundamentally, kinetic data should be used to drive key decisions much earlier in the drug discovery process but the throughput limitations of traditional methods precludes this. A major limitation that hampers acquisition of high-throughput kinetic data is the technical challenge in collecting substantially confluent datapoints for accurate parameter estimation from time-course analysis. Here we describe the use of Fluorescent Imaging Plate Reader (FLIPR), a CCD camera technology, as a potential high-throughput tool for generating biochemical kinetic data with smaller time-intervals. Subsequent to the design and optimization of the assay, we demonstrate the collection of highly confluent time-course data for various kinase protein targets with reasonable throughput to enable SKR-guided medicinal chemistry. We select kinase target 1 as a special case study with covalent inhibition and demonstrate methods for rapid and detailed analysis of the resultant kinetic data for parameter estimation . In conclusion, this approach has the potential to enable rapid kinetic studies to be carried out on 100's of compounds per week and drive project decisions with kinetic data at an early stage in drug discovery.
Tales of the Unexpected: Selectivity of Nucleophilic Additions to Zigzag Nanographene Diones
Authors: Ribar Peter , Valenta Leos , Solomek Tomas , Juricek Michal
Published: December 2020

Nucleophilic addition of carbon-centered nucleophiles to nanographene ketones represents a valuable late-stage method for the functionalization of zigzag nanographenes, but its use is rare in the chemical literature. Using two model systems, non-Kekulé triangulene-4,8-dione and Kekulé anthanthrone, we identify unexpected regioselectivities and uncover the rules that govern these reactions. Considering the large number of nanographene ketones that have been reported since the pioneering work of Eric Clar, this method enables synthesis and exploration of hitherto unknown functionalized nanographenes.
Immunomodulator dietary foods as a promising preventive tool against infectious diseases such as COVID-19
Authors: Rucha Selkar  , Dhirajsingh Rajput
Published: December 2020

The pandemic crisis of COVID-19 has brought significant attention towards increasing natural defense mechanism i.e. immunity in order to fight emerging new species of micro-organism. Natural ways to improve immunity include two major components, regular exercise and nutrient diet. The former is physical process and also demand the later and hence healthy nutritional diet can be claimed as basis for improving natural immunity. There are numerous plants and vegetables which can be used in diet however, few vegetables are most common around the globe. These immunomodulator dietary vegetables used as foods can be a promising preventive tool against infectious diseases such as COVID-19. Present work was undertaken in view of a review to present the commonly utilizable 17 vegetables and their nutritional information. The study was done based on gist of selected previous works and established nutritional facts related to selected dietary vegetables, their nutrition profile and its relation with immunity. The 17 vegetables are rich source of Calories, Carbohydrate, Protein, Vitamins such as A, D, B12, C, and B6; micronutrients such as Calcium, Sodium, Potassium, Iron, and Magnesium. All these vegetables have very less fat and no Cholesterol, which insures their health stimulating effect. Based on availability, use of these vegetables in alternate way can help to ensure supplementation of essential nutrients to boost natural immunity.
PERFORMANCE EVALUATION OF IRRIGATION SCHEMES IN RUGERAMIGOZI MARSHLAND, RWANDA
Authors: Hakuzimana Janvier , Masasi Blessing
Published: December 2020

Evaluating irrigation schemes contributes to the identification of performance gaps and this may lead to implementation of necessary improvements for enhancing agricultural productivity. In Rwanda, despite significant investments in irrigated agriculture, most of the irrigation schemes are performing far below their planned capacity. This study aimed at benchmarking the performance of Rugeramigozi 1 and Rugeramigozi 2 irrigation schemes located in Rugeramigozi marshland, Rwanda using irrigation indicators developed by the International Water Management Institute (IWMI). The study showed that land productivity for both the two irrigation schemes was generally low. Rugeramigozi 2 irrigation scheme had superior performance than Rugeramigozi 1 in terms of water productivity due to adoption of deficit irrigation strategies that promoted water conservation. The performance indicators for water service delivery showed that water use was more sufficient in Rugeramigozi 1 compared to Rugeramigozi 2 irrigation scheme. The water delivery capacity performance for both schemes revealed that the existing irrigation canals were sufficient to meet the irrigation water requirements at peak demand. The analysis of financial performance in both schemes indicated that the collected irrigation fees were inadequate to cover the operation and maintenance costs. Similarly, the gross returns on investment were low in both irrigation schemes due to low crop yields that generated low revenue for farmers. Overall, the performance indicators showed that both Rugeramigozi 1 and Rugeramigozi 2 irrigation schemes were in need of intensive management and infrastructural improvements in order to increase productivity and enhance sustainability of the schemes.
WATER SCARCITY OR DROUGHT? THE CAUSE AND SOLUTION FOR THE LACK OF WATER IN LAGUNA DE ACULEO
Authors: Venegas-Quiñones Héctor L. , Thomasson Mark , Garcia-Chevesich Pablo A.
Published: December 2020

One of the most recurring discussions among people is the real impact of global warming and human activity on our natural resources. It is hard to identify and quantify the impact generated by each one. Laguna de Aculeo located in Paine city, Chile. It was one of the most attractive and beautiful places to visit in the summer. Today, It has been completely drying up. This research evaluates weather and hydrologic values registered by government weather and water levels stations. The purpose is to evaluate if there has been a change in precipitation, temperature, and water level trend. The analysis consists of the evaluation of the statistical parameters, and legal water withdrawals and fines imposed. The results of this study indicate that the cause of the drought of the lake is generated by climatic and anthropogenic factors. However, the changes in precipitation and temperature over the years are not significant for drying a lake. Therefore, it is possible to assume that human activities are arguably the greatest cause of impact on Laguna de Aculeo. Finally, we present tools, strategies, and practical solutions to prevent, control, and restore lake water level.
AQUATIC HEALTH INDEX OF COASTAL AQUACULTURE ACTIVITIES AT SOUTH-EASTERN COAST OF BANGLADESH
Authors: Barua Prabal , Rahman Syed Hafizur
Published: December 2020

Coastal aquaculture is the most productive export earning sectors of Bangladesh. South-Eastern coast of Bangladesh is the most productive region of coastal aquauculture and millions of people depend on this sectors for livelihood. The present paper is an attempt to evaluate the economically viable shrimp culture zone through enumeration of Aquatic Health Index in and around south-east coast of Bangladesh. In the present study, 10 important sites for coastal aquaculture activity area selected for the study and the aquatic health index value of these stations varied as per the order Stn. 4 >Stn.6 > Stn. 2> Stn. 1> Stn. 5> Stn. 3 > Stn. 7> Stn. 10> Stn. 8> Stn. 9. The lower value of the index reflects deteriorated condition of the water due to excessive industrial, shipbreaking activities and domestic run-off.
SCREENING RICE (Oryza sativa L.) GENOTYPES FOR RESISTANCE AGAINST DROUGHT
Authors: Salleh Mohd Syahmi , Malek Ris Amirah , Shahari Rozilawati , Nordin Mohd Shukor
Published: December 2020

Drought is regarded as one of the limiting factors in rice production nationally and globally. The present study was conducted to study morpho-physiological and biochemical responses of rice genotypes to drought stress, to identify potential traits for use as a selection criterion in breeding drought-tolerant rice at seedling stage and finally to identify rice genotype resistant to drought stress for use as parents in future breeding. The experimental design used was a split-plot design with three replications, with drought stress as the main plot and rice genotypes as the sub-plot. The main plots consisted of control (normal irrigation) and drought stress. The sub-plots consisted of twelve rice genotypes namely Apami (V1), Boewani (V2), Basmati 370 (V3), Cica- 4 (V4), Dular (V5), Jarom mas (V6), Kalarata (V7), Biris (V8), Haiboq (V9), Moroberekan (V10), MR 297 (V11) and Aerob 1 (V12). Results showed that drought stress led to a decrease in plant height, leaves size, root length, total dry weight, and number of leaves but an increment in proline content. The genotype Apami and Kalarata were found to accumulate higher proline content indicating potential resistant ability towards drought stress. Dular and Aerob1, along with tolerant control genotype, Moroberekan, on the other hand, recorded a lower SES score. Leave size, root length, and plant height could also be used as a selection criterion in breeding drought-tolerant rice due to high values of broad-sense heritability and genetic advance by percentage of mean (GAM). Nevertheless, further study on the genetics and physiological basis of tolerant ability at reproductive growth stages are necessary in order to assess grain yield potential of the potentially tolerant genotype reported in this study.
PHYSICOCHEMICAL AND BIOLOGICAL PARAMETERS OF WATER AT INDUSTRIAL SITES OF METROPOLITAN CITY OF CHENNAI, TAMIL NADU, INDIA
Authors: Sakthivadivel Murugesan , Nirmala Arunachalam , Sakthivadivel Jeyabharathi , Mukhilan Rajaratnam Rajiv , Tennyson Samuel
Published: December 2020

Water is essential to sustain life, and an adequate, safe and accessible supply must be available to all as improving access to safe drinking water can result in tangible benefits to health. In the present study, eighteen water samples from six different study area, viz., Red Hills, T. Nagar, Saidapet, Ashok Nagar, Alandur and Guindy of metropolitan Chennai were tested for their physicochemical and biological parameters, of which Red Hills served as control area. Results with regard to the physical parameters, showed no variation in the colour of water samples which was clear except for control as it appeared light brown. The odour of samples collected from all six study areas was observed to be constant and agreeable. The water temperature, turbidity, electrical conductivity and total dissolved solids for all six study areas ranged from 28.7 to 29.7°C, 3.7 to 11.7NTU, 723.3 to 1099.7μS/cm, and 396.7 to 805.0mg/L. The values of chemical parameters represented by pH, total hardness, total alkalinity, sulphates and flourides ranged from 7.7 to 8.0, 128.0 to 503.3mg/L, 13.3 to 50.0mg/L, 106.6 to 224.0mg/L, and 0.6 and 1.5mg/L. All the samples were found to be free from coliforms except for the control in the case of biological parameters. Overall results indicate that the physical and chemical parameters were found to be within the permissible limits set by standards and biological contamination was absent in the samples except in control which is a natural reservoir.