scholarly journals Experimental Study on the Mechanical Properties of Biomass Briquettes from a Mixture of Rice Husk and Pine Sawdust

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1060 ◽  
Author(s):  
Andrés Niño ◽  
Nelson Arzola ◽  
Oscar Araque
Keyword(s):  
Mechanical Properties ◽  
Rice Husk ◽  
Industrial Process ◽  
Point Of View ◽  
Total Biomass ◽  
Economic Point ◽  
Pine Sawdust ◽  
Starting Point ◽  
Mechanical Durability ◽  
Compaction Time

In search of guaranteeing global energy requirements, waste from different agricultural, forestry and industrial sources is presented as a renewable and sustainable energy source. The manufacture of solid fuels from biomass based on the densification of this to improve its mechanical and energy properties is one of the mechanisms of viable energy production from the technical-economic point of view. The biomass mixture is one of the topics currently researched, in which various factors can affect the final behavior of the briquettes. In this research the influence on the mechanical properties of briquettes obtained from the mixture between two biomasses is studied: rice husk and pine sawdust. A mixed factorial experimental factorial design is used, in which the process temperature, the proportion of the rice husk biomass over the total mass, and the compaction time are defined as experimental factors. Experimental statistical models are obtained that partially explain the behavior of several responses that characterize the mechanical properties of the briquettes based on the selected independent parameters. It was found that the mechanical durability of the briquettes is higher than 97.5%, meets the existing standards, like German Institute for Standardization (DIN) 51731, Theological Institute Batista Ebenézer (ITEBE) SS187120 or International Organization for Standardization (ISO) 17225-2, for a compaction temperature of 110 °C and a proportion of rice husk that does not exceed 60% of the total biomass mixture in the briquette. The compaction time was also statistically significant to achieve a briquettes density and an appropriate elasticity modulus in the briquettes. The results of this research are of interest and can serve as a starting point for the design of the industrial process of densification of these two mixed biomasses.

scholarly journals Obtaining a Flexible Film Elaborated from Cassava Thermoplastic Starch and Polylactic Acid

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Germán A. Arboleda ◽  
Camilo E. Montilla ◽  
Héctor S. Villada ◽  
Giovanni A. Varona
Keyword(s):  
Mechanical Properties ◽  
Temperature Profile ◽  
Polylactic Acid ◽  
Coupling Agent ◽  
Thermoplastic Starch ◽  
Point Of View ◽  
Triple Interaction ◽  
Scanning Calorimetry ◽  
Economic Point ◽  
Flexible Film

A flexible film was obtained from a blend of cassava thermoplastic starch and polylactic acid, using maleic anhydride as coupling agent. For this, an experimental design with three factors was used: polylactic acid content, coupling agent content, and temperature profile of the blown extrusion. It was found that the three factors generated significant differences on the response variables of tensile mechanical properties individually as in their triple interaction. Differential scanning calorimetry (DSC) was used by understanding the behavior of thermal properties of TPS/PLA blends with and without coupling agent, finding similar results between both. From this, the combination with 28% polylactic acid, 0.87% coupling agent, and 155.75°C temperature profile permitted the obtaining of a material with outstanding mechanical properties and offered advantages from the economic point of view.

scholarly journals Identification of Some Errors in the Genome Assembly of Bovidae by FISH

2020 ◽  
Vol 160 (2) ◽  
pp. 85-93
Author(s):  
Lisa De Lorenzi ◽  
Pietro Parma
Keyword(s):  
Bos Taurus ◽  
Unintended Consequences ◽  
Point Of View ◽  
Ovis Aries ◽  
Capra Hircus ◽  
Free Access ◽  
Similar Species ◽  
Economic Point ◽  
Starting Point ◽  
Genome Assemblies

From an economic point of view, Bovidae represent the most important family of the Ruminantia suborder. Thus, the mitochondrial and nuclear genomes of Bos taurus were among the first genomes to be sequenced after the sequencing of the human genomes. Over the millennia, the evolution of the genomes of the 3 main species belonging to the Bovidae family - B. taurus (BTA), Ovis aries (OAR), and Capra hircus (CHI) - has led to few chromosome rearrangements. Certainly, the availability and free access to the animal genomes significantly contributed to the improvement of animal genetics; however, some errors may exist due to the high automation in the genomic assembly construction process. In this work, some differences between the genomes of cattle, goat, and sheep highlighted by bioinformatics analysis have been verified by FISH, confirming that some errors persist even in the most recent genome assemblies. This type of approach has allowed us to detect a misassembly of a region belonging to BTA16 and to the homologues OAR12 and CHI16, a misassembly of a short tract in BTA22, OAR19, and CHI22, an incorrect mapping of a region of BTA21 and of CHI27 and OAR26, a discrepancy in the BTA26, OAR22, and CHI26 assemblies, a missed inversion in CHI1 compared to BTA1 and OAR1, and the exact assembly of a region of about 7 Mb in OAR10 and CHI12. Incorrect positioning of genomic tracts can cause unintended consequences in genetic analyses, especially when the data represent a starting point for the construction of genetic tools. In the new genomic assemblies published after the conclusion of our experiments, however, the accuracy in the construction of animal assemblies has been much improved, even if the new assemblies present more extended unmapped portions than the previous versions. The gap could be filled by comparative analyses between similar species or FISH.

scholarly journals SHIP2FAIR – Martini & Rossi: integration of Solar Heat in Industrial Process – Preliminary evaluation

2019 ◽  
Vol 113 ◽  
pp. 03018 ◽  
Author(s):  
Stefano Barberis ◽  
Francesco Peccianti ◽  
Luca Castellino ◽  
Thomas Bolognesi ◽  
Alessandro Bortoletto
Keyword(s):  
Industrial Process ◽  
Economic Feasibility ◽  
Point Of View ◽  
Solar Irradiation ◽  
Preliminary Evaluation ◽  
Solar Collectors ◽  
Economic Point ◽  
Solar Heat ◽  
Funded Project ◽  
Definition Of

SHIP2FAIR is a H2020 European funded project†, which aim to foster the integration of solar heat in industrial processes from the agro-food sector facilitating the integration of solar heat production in low temperature processes. Based on the assessment of the industrial process for the production of different spirits and the local solar potential in Pessione plant (TO) of Martini & Rossi – one of the four demosite of the project -, the preliminary results that guided the choice of the most suitable solar collectors (Fresnel) and the definition of the thermo-economic parameters for the solar plant are hereby presented. The preliminary assessment takes into account different perspectives from the industrial and economic point of view: the availability of suitable surfaces, the economics of the investment and the best processes to be fed by solar produced steam towards a preliminary techno-economic feasibility study. The starting points for the analysis have been the characterization of the thermal demand in terms of necessary temperature level (°C), overall consumption and time distribution. The following step has been the identification of the suitable collectors to be installed taking into account the thermal parameters presented before, the boundary conditions of the industrial facility (e.g. space available, orientation, etc.), the technical characteristics of the collector itself and the solar irradiation available considering the plant’s location. Moreover, the complex thermal facility in the factory, constituted by multiple (3) gas boilers and a Combined Heat and Power (CHP) plant in two different but linked pressurized steam loops, is taken into account for the definition of the solar collectors configuration and their integration via the proper management of heat generators and storage. The calculations are based on the expected thermal (steam) production guaranteed by the solar collectors and avoided GHG based on the reduction of gas fired boilers consumption.

scholarly journals THE NEW INTERNATIONAL CHAMBERS OF THE PARIS COURTS – INNOVATIVE WAY FOR RESOLUTION OF COMMERCIAL DISPUTES

2018 ◽  
Vol 28 (1) ◽  
pp. 241-246
Author(s):  
Ljuben Kocev
Keyword(s):  
Dispute Resolution ◽  
Recognition System ◽  
Point Of View ◽  
The European Union ◽  
Economic Point ◽  
Starting Point ◽  
Rules Of Procedure ◽  
Council Regulation ◽  
Court Of Appeal ◽  
The Eu

The process of the withdrawal of the United Kingdom form the European Union has been discussed predominantly from a political and economic point of view. However, the consequences are more far reaching. With UK on the doorstep of leaving the EU, the decisions issued by its courts would no longer benefit from the recognition system provided in the Brussels Regulation (Council Regulation (EC) No. 44/2001). As a result of this, it is expected that London would no longer be seen as a primary destination for international litigants.In the awaiting of the aftermath from the Brexit, other cities and member state countries of the EU have started the race to position themselves as the next “legal hub”. While other member states have been vocal about offering alternative courts, so far France has been at the forefront of this initiative. On 7 February 2018 two Protocols were signed by the French Minister of Justice, the President of the Paris Bar, and the presidents of the Paris Court of Appeal and the Paris Commercial Court. With the first protocol amendments were made to the already existing International Chamber within the Paris Commercial Court, whereas with the second Protocol a new International Chamber has been created within the Paris Court of Appeal. The aim of the creation of these international divisions within the Paris Court is to create an attractive jurisdictional system which would meet the expectations of the economic actors. Paris has already been one of the most important world centers for dispute resolution as a result of the work of the International Chamber of Commerce and its work in the field of Alternative Dispute Resolution (ADR). However, with this initiative Paris has an opportunity to further strengthen its attractiveness.The adoption of the two Protocols is a groundbreaking move which sets forth innovative rules of procedure, incorporating unique approaches in the field of international commercial litigation. The rules of procedure contain an increased level of flexibility offering the parties a chance for litigations with great similarity to arbitration. Most notably, the new Protocols provide for the usage of English as language in the course of the proceedings, adapted procedure which should better suit the need of the parties, focus on oral testimonies instead of written witness and expert submissions, possibility for cross – examination, broader scope of tools for securing evidence, such as requests for document production, as well as the possibility of non- French lawyers to appear in front of the Courts. The aim of this article is to provide an insight in the new structure of the International Chambers by reviewing the novelties in the two new Protocols. The article reflects on similar initiatives which have been undertaken in other EU members and countries worldwide, and whether this can be the starting point for more drastic and revolutionary reforms in the traditional litigation system.

scholarly journals Clad rolled reinforcing bars

2020 ◽  
pp. 56-58
Author(s):  
E. S. Ovchinnikov ◽  
I. A. Ovchinnikova
Keyword(s):  
Mechanical Properties ◽  
Point Of View ◽  
Reinforced Concrete Structures ◽  
Reinforcing Bars ◽  
Economic Point ◽  
Reinforcing Bar ◽  
Conventional Steel ◽  
New Type ◽  
Metallurgical Bond ◽  
Clad Steel

Premature destruction of reinforced concrete structures exposed to aggressive environmental influences is a serious problem, both from a technical and economic point of view. Carbon steel reinforcing bar embedded in concrete is usually not subject to corrosion due to the formation of a protective ion-oxide film that passivates the steel under conditions of strong alkalis in the concrete pores. However, this passivity can be disrupted by chlorides penetrating the concrete, or by carbonation reaching the surface of the reinforcing bar. Then the corrosion begins.An example of a solution to this problem is the replacement of conventional steel reinforcement with clad steel during construction. Through the closely spaced interface of two solid metals, the atoms diffuse with each other at different speeds, at a high temperature, and at a certain pressure. This creates a metallurgical bond between two solid metals, the integrity or «strength» of which depends on the «purity» of the interface between the two metals and on the atoms that make up this «transition zone» or bond.The article investigates plated rebar, to determine the possibility of production in a mill 320 OJSC «BSW – Management Company of the Holding «BMC». To study the new type of reinforcing bars, special types of research were conducted as determining the chemical composition, microstructure, and mechanical properties. The main advantages of this type of product are defined in the article.

scholarly journals SIFAT FISIS DAN MEKANIS PAPAN KOMPOSIT DARI SERAT BATANG KELAPA SAWIT (Elaeis guineensis Jacq) DENGAN BERBAGAI KOMPOSISI PEREKAT PVAC

2021 ◽  
Vol 4 (3) ◽  
pp. 460
Author(s):  
Muhammad Hasan ◽  
Adi Rahmadi ◽  
Henny Arryati
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Water Content ◽  
Palm Oil ◽  
Elaeis Guineensis ◽  
Physical And Mechanical Properties ◽  
Point Of View ◽  
Economic Point ◽  
Composite Board ◽  
Adhesive Composition

The purpose of this study was to determine the effect of PVAc adhesive composition on the physical and mechanical properties of the composite boards of palm oil stems and determine the best test example from a technical and economic point of view. This research will be carried out at the Banjarbaru Forestry Faculty Workshop. Research time ± 3. There are 3 levels (levels) of the PVAc adhesive composition tested, namely 40%, 45%, and 50%. The parameters of the composite board properties studied were physical properties, including: Moisture content and density, as well as the mechanical properties that fracture strength (MoR) and modulus of elasticity (MOE). The results showed that the physical and mechanical properties of composite boards were strongly influenced by the adhesive composition, the more the adhesive composition is used, the better the composite board properties, especially in terms of water content and MoR, where the results show that the water content is decreasing and the MoR is increasing. Nevertheless the use of a 40% adhesive composition has been able to produce a composite board that can meet SNI standards No. 03-2105 2006. Properties of palm oil stem waste composite boards made with PVAc adhesive (Crosslink X-PVAc) moisture content ranged from 9.49% - 13.07%, density 0.494 - 0.559 gr / cm³, and MoR 20.613 - 22.483 kg / cm².Tujuan penelitian untuk mengetahui pengaruh komposisi perekat PVAc terhadap sifat fisis dan mekanis papan komposit dari batang kelapa sawit dan menentukan contoh uji yang terbaik dari segi teknis. Penelitian ini dilaksanakan di Workshop Fakultas Kehutanan Banjarbaru. Waktu penelitian ±3.  Ada 3 taraf (level) dari perlakuan komposisi perekat PVAc yang diuji cobakan, yaitu 40%, 45%, dan 50%. Adapun parameter sifat papan komposit yang diteliti adalah sifat fisis, meliputi: Kadar air dan kerapatan, serta sifat mekanisya itu keteguhan patah (MoR) dan keteguhan lentur (MOE). Hasil penelitian menunjukkan bahwa sifat fisis dan mekanis papan komposit sangat dipengaruhi oleh komposisi perekat, semakin bertambah komposisi perekat yang digunakan maka sifat papan komposit semakin baik, terutama ditinjau dari kadar air dan  MoR, dimana hasil menunjukkan bahwa kadar air semakin berkurang dan MoR makin meningkat. Meskipun demikian penggunaan  komposisi  perekat 40% sudah dapat menghasilkan papan komposit yang dapat memenihi standar SNI no 03-2105 2006. Sifat papan komposit limbah batang kelapa sawit yang dibuat dengan perekat PVAc (Crosslink X-PVAc) kadar air berkisar 9,49% – 13,07%, Kerapatan 0,494 - 0.559 gr/cm³, dan MoR 20.613 – 22.483 kg/cm².

LES AXES DE LA CRÉATION ET LA NAISSANCE DE LʹIMAGINAIRE COMME LANGAGE MYTHIQUE

Trictrac ◽  
2016 ◽  
Vol 9 ◽  
Author(s):  
Liliana Danciu ◽  
Petru Adrian Danciu
Keyword(s):  
Sacred Space ◽  
Physical World ◽  
Spoken Word ◽  
Point Of View ◽  
Philosophical Approach ◽  
Starting Point ◽  
Written Form ◽  
The Creation ◽  
Religious Systems ◽  
Rich Spectrum

The axes of the creation and birth of the imaginary as a mythical language. Our research follows the relationships of the concepts that are taking into account creation on the double axis of verticality and horizontality. We highlight those symbolic elements which would later constitute the mythical language about the sacred space-temporality. Inside this space-temporality a rich spectrum of mythical images develops; images capable of explaining the relationships of the creation plans. Without a religious perception of the temporality, the conceptualization of the axis would remain a philosophical approach. Through our point of view, the two are born simultaneously. Thanks to them, creation can be imagined. The first “frozen” formula of the mystical human spirit can be thought, brought to a palpable reality, expressed in an oral and then a written form. Studied together, temporality (sacred or not) and space are permanently imagined together. For example, a loss of mundane temporality in the secret ecstasy that offers to the soul an ascending direction does not mean getting out of universal temporality, but of its mundane section. In the sacred space the soul relates to time. Even the gods are submitted by the sacred, Aeon sometimes being synonymous to destiny. The universal creator seems to evade every touch, but not consistently, only when he avoids the descent into its created worlds. In sacredness, time and space seem or become confused, both expressing the same reality, by the immediate swing from thinking to deed. The mythical imagery conceives the displacement in the primary space-temporality by the spoken word. So, for something to appear and live, the spoken word is required. Even the divine dream appears as a pre-word of a creator’s thought. The thought follows the spoken word, the spoken word follows the gestures which finally indicate the meanings of the creative act, controlling the rhythm of the creation days. These three will later be adapted through imitation in rite. We are now situated at the limit of the physical world, a real challenge for the mythical imagery. The general feature of the mythical expression on the creation of the material world is the state of the divinity’s exhaustion, most often conceptualized by sacrifice or divine fatigue. The world geography identifies with the anatomy of a self-gutted god. Practically, material creation is most likely the complete revelation of God’s body autopsy. As each body decomposes, everything in it is an illusion. An axial approach of the phenomenon exists in all religious systems. The created element’s origin is exterior, with or without a pre-existing matter, by a god’s sacrifice or only because it has to be that way. This is the starting point of the discussion on the symbolism of axiality as a reason for the constitution of the language of creation, capable of retelling the imaginary construction of myth in an oral and then written form.

Sophie Laws, with Caroline Harper and Rachel Marcus. Research for Development: A Practical Guide. New Delhi: Vistaar Publications. 2003. xiii+475 pages. Paperback. Indian Rupees 450.00.

2003 ◽  
Vol 42 (2) ◽  
pp. 170-172
Author(s):  
Mir Annice Mahmood
Keyword(s):  
Policy Research ◽  
Point Of View ◽  
Basic Question ◽  
New Delhi ◽  
Economic Point ◽  
Scarce Resources ◽  
Is Research ◽  
The Subject ◽  
Development Workers

To implement any successful policy, research about the subject-matter is essential. Lack of knowledge would result in failure and, from an economic point of view, it would lead to a waste of scarce resources. The book under review is essentially a manual which highlights the use of research for development. The book is divided into two parts. Part One informs the reader about concepts and some theory, and Part Two deals with the issue of undertaking research for development. Both parts have 11 chapters each. Chapter 1 asks the basic question: Is research important in development work? The answer is that it is. Research has many dimensions: from the basic asking of questions to the more sophisticated broad-based analysis of policy issues. The chapter, in short, stresses the usefulness of research which development workers ignore at their own peril.

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