scholarly journals Possibility of drying oak and ash elements with bark

2020 ◽  
pp. 97-108
Author(s):  
Goran Milic ◽  
Marko Veizovic ◽  
Nebojsa Todorovic
Keyword(s):  
Moisture Content ◽  
Tree Bark ◽  
Conventional Drying ◽  
The Subject ◽  
Very High

The subject of this paper is the analysis of the possibility of drying oak and ash elements with the presence of tree bark on one side of the element (bark edge). One batch was dried per species, and the process was controlled by moisture content (MC) probes in the kiln, but also determined by the oven-dry method. Drying defects and their causes were also analyzed. The results showed that conventional drying can be used for this purpose - the duration is relatively short (up to 7 days), and the variation of the final MC is relatively small. The main problem is a relatively large number of crooked elements at the end of drying, particularly those where the share of wood in relation to the bark was small. Very high axial shrinkage coefficients of the bark (4.5 times higher than wood) are the cause of these deformations.

التغير المناخي واثره في المقنن المائي لمحصول العنب في محافظة ديالى

2019 ◽  
Vol 1 (34) ◽  
pp. 391-422
Author(s):  
اشواق حسن حميد صالح
Keyword(s):  
Climate Change ◽  
Statistical Analysis ◽  
Wind Speed ◽  
Extreme Temperature ◽  
Solar Brightness ◽  
The Subject ◽  
Climate Station ◽  
The Times ◽  
High Level ◽  
Very High

Climate change and its impact on water resources is the problem of the times. Therefore, this study is concerned with the subject of climate change and its impact on the water ration of the grape harvest in Diyala Governorate. The study was based on the data of the Khanaqin climate station for the period 1973-2017, (1986-2017) due to lack of data at governorate level. The general trend of the elements of the climate and its effect on the water formula was extracted. The equation of change was extracted for the duration of the study. The statistical analysis was also used between the elements of the climate (actual brightness, normal temperature, micro and maximum degrees Celsius, wind speed m / s, relative humidity% The results of the statistical analysis confirm that the water ration for the study area is based mainly on the X7 evaporation / netting variable, which is affected by a set of independent variables X1 Solar Brightness X4 X5 Extreme Temperature Wind Speed ​​3X Minimal Temperature and Very High Level .

Estimation of Energy Saving for Melting Process on Sewage Sludge

1991 ◽  
Vol 23 (10-12) ◽  
pp. 2011-2018 ◽  
Author(s):  
T. Murakami ◽  
K. Sasabe ◽  
K. Sasaki ◽  
T. Kawashima
Keyword(s):  
Sewage Sludge ◽  
Moisture Content ◽  
Energy Saving ◽  
Fuel Consumption ◽  
Melting Process ◽  
System Operation ◽  
Operational Conditions ◽  
Volatile Solids ◽  
Cake Moisture ◽  
Very High

The possible volume reduction and stabilization of the sewage sludge associated with the melting process are expected to be greater than with the incineration process. In addition, melted slag can be utilized. However, since the melting process requires a very high temperature to melt inorganics (ash) in the sludge, the technologies to minimize energy consumption, to establish system operation and to prolong durability of facilities should be developed. This paper discusses the auxiliary fuel consumption as follows.(1)Preparation of a model that provides the auxiliary fuel consumption of the melting system on the basis of the mass and heat balances.(2)Evaluation of the auxiliary fuel consumption in the above model using the cake moisture content, the volatile solids of the cake, the dried cake moisture content and the melting temperature as parameters.(3)Examination of the operational conditions for an energy saving melting system based on the results of (1) and (2) above.

scholarly journals Influence of Hydrogeochemistry on Tunnel Drainage in Evaporitic Formations: El Regajal Tunnel Case Study (Aranjuez, Spain)

2021 ◽  
Vol 13 (3) ◽  
pp. 1505
Author(s):  
Ignacio Menéndez Pidal ◽  
Jose Antonio Mancebo Piqueras ◽  
Eugenio Sanz Pérez ◽  
Clemente Sáenz Sanz
Keyword(s):  
High Speed ◽  
Civil Engineering ◽  
Saturation Index ◽  
The Subject ◽  
Under Construction ◽  
Underground Flow ◽  
Very High ◽  
Over Time

Many of the large number of underground works constructed or under construction in recent years are in unfavorable terrains facing unusual situations and construction conditions. This is the case of the subject under study in this paper: a tunnel excavated in evaporitic rocks that experienced significant karstification problems very quickly over time. As a result of this situation, the causes that may underlie this rapid karstification are investigated and a novel methodology is presented in civil engineering where the use of saturation indices for the different mineral specimens present has been crucial. The drainage of the rock massif of El Regajal (Madrid-Toledo, Spain, in the Madrid-Valencia high-speed train line) was studied and permitted the in-situ study of the hydrogeochemical evolution of water flow in the Miocene evaporitic materials of the Tajo Basin as a full-scale testing laboratory, that are conforms as a whole, a single aquifer. The work provides a novel methodology based on the calculation of activities through the hydrogeochemical study of water samples in different piezometers, estimating the saturation index of different saline materials and the dissolution capacity of the brine, which is surprisingly very high despite the high electrical conductivity. The circulating brine appears unsaturated with respect to thenardite, mirabilite, epsomite, glauberite, and halite. The alteration of the underground flow and the consequent renewal of the water of the aquifer by the infiltration water of rain and irrigation is the cause of the hydrogeochemical imbalance and the modification of the characteristics of the massif. These modifications include very important loss of material by dissolution, altering the resistance of the terrain and the increase of the porosity. Simultaneously, different expansive and recrystallization processes that decrease the porosity of the massif were identified in the present work. The hydrogeochemical study allows the evolution of these phenomena to be followed over time, and this, in turn, may facilitate the implementation of preventive works in civil engineering.

scholarly journals XIV. On the absorption of gases by solids

1881 ◽  
Vol 32 (212-215) ◽  
pp. 407-408
Keyword(s):  
Royal Society ◽  
Hydraulic Press ◽  
Careful Examination ◽  
Solid Matter ◽  
Chemical Action ◽  
High Pressure And Temperature ◽  
Solid Iron ◽  
Series Of Experiments ◽  
The Subject ◽  
Very High

During the progress of the investigations which I have from time to time had the honour of bringing under the notice of the Royal Society, I have again and again noticed the apparent disappearance of gases inclosed in vessels of various materials when the disappearance could not be accounted for upon the assumption of ordinary leakage. After a careful examination of the subject I found that the solids absorbed or dissolved the gases, giving rise to a striking example of the fixation of a gas in a solid without chemical action. In carrying out that most troublesome investigation, the crystalline separation of carbon from its compounds, the tubes used for experiment have been in nine cases out of ten found to be empty on opening them, and in most cases a careful testing by hydraulic press showed no leakage. The gases seemed to go through the solid iron, although it was 2 inches thick. A series of experiments with various linings were tried. The tube was electro-plated with copper, silver, and gold, but with no greater success. Siliceous linings were tried fusible enamels and glass—but still the' tubes refused to hold the contents. Out of thirty-four experiments made since my last results were published, only four contained any liquid or condensed gaseous matter after the furnacing. I became convinced that the solid matter at the very high pressure and temperature used must be pervious to gases.

Flow Field on Helodeck of a Frigate: A Review

2019 ◽  
Vol 161 (A4) ◽  
Keyword(s):  
Flow Field ◽  
Numerical Solutions ◽  
Offshore Structures ◽  
High Speeds ◽  
High Turbulence ◽  
The Subject ◽  
Offshore Industry ◽  
The Military ◽  
Very High ◽  
Made In

The various functions desired from a frontline warship such as a frigate, corvette or a destroyer, coupled with the requirement of very high speeds and economic viability restricting the size, necessitates a very dense arrangement of weapons and sensors on the top deck and superstructure. Accordingly, Navies across the world have faced several problems with respect to functions for which a good aerodynamic design for these structures is essential. Major issues include smoke nuisance created due to impinging of the ship's exhaust gases on to the top deck leading to possible suction by engine intakes and high turbulence in the ship's air-wake leading to ship aircraft interface concerns. The flow field on the helodeck is extremely complex due to its geometry and interaction with the wake of the ship’s superstructure. A knowledge of this complexity is essential for ensuring safe helo operations on the helodeck. The problem of ship helicopter interaction has hogged the lime light in recent times, due to rising demand for design of warships for increased stealth, especially in the past two decades. Consequently, several researchers in countries with advanced Navies have invested considerable resources towards evolving both experimental and numerical solutions for the problem. However, given the military nature of the operations, open literature on the subject containing details of such research, which can be used as reference material for present work, are limited. Considering the complexities involved in the problem, an attempt has been made in this paper to holistically review the widely scattered and limited literature in this field. A good amount of literature on marine helo applications emerge from the offshore industry. Keeping in mind that the fields of warship design and offshore structures are dissimilar and have their peculiar problems, informed conclusions have been made in drawing lessons from available literature.

scholarly journals HUBUNGAN PENGETAHUAN, SARANA PRASARANA, DAN PENGAWASAN DENGAN PERILAKU PENERAPAN SOP PEKERJA CONFINED SPACE

2018 ◽  
Vol 7 (1) ◽  
pp. 91
Author(s):  
Ratih Putri Ramadhani
Keyword(s):  
Total Population ◽  
Standard Operating Procedures ◽  
Dust Collector ◽  
Confined Space ◽  
Cross Sectional ◽  
Descriptive Research ◽  
Standard Operating ◽  
Strong Relation ◽  
The Subject ◽  
Very High

Working in confined space has very high risks, therefore, one of the hierarchy control to manage identified risk is administrative by implementing Standard Operating Procedures (SOP). The implementation of SOP correlates with the worker behaviors. The purpose of this research is to find out correlation between knowledge, facilities, and supervision to implementation behaviors of sop in confined space. This study is an observational descriptive research using cross sectional approach. The subject is a total population of 19 cleaning workers in Ducting Dust Collector PT. X . The data provided in distribution of frequency tables and was analyzed using crosstabulation followed with Phi and Cramers V Coefficient to see the relation strength. The result of the study shows that most of the workers has a good behavior in implementing the working SOP in  confined space. According to Phi and CramersV Coefficient, Knowledge (0,57) and Facilities (0,57) has a strong relation with the implementation behavior of SOP in confined space. Supervision has no relationship at all with the implementation behavior of working SOP within the confined space. Keywords: confined space, behavior, SOP 

scholarly journals PENINGKATAN HASIL BELAJAR IPA MELALUI MODEL PEMBELAJARAN PROBLEM BASED INTRODUCTION PADA SISWA KELAS II SD INPRES BONTOCINIAYO

2018 ◽  
Vol 7 (2) ◽  
pp. 196
Author(s):  
Muliati .
Keyword(s):  
Student Learning ◽  
Learning Outcomes ◽  
Science Studies ◽  
Student Learning Outcomes ◽  
Class Ii ◽  
Female Students ◽  
Average Value ◽  
The Subject ◽  
Improve Student Learning ◽  
Very High

This research is a classroom action research that aims to improve the learning outcomes of class II SDI Bontociniayo through the use of the Problem Based Introduction (PBI) method. The subject of this study was class II SDI Bontociniayo with 26 students consisting of 15 female students and 11 male students.This research was conducted in two cycles, namely the first cycle was carried out 2 times and the second cycle was also conducted two meetings, which were conducted for 2 months. The result is an increase in student learning outcomes through the Problem Based Introduction (PBI) method is (i) The level of learning outcomes of class II SDI Bontociniayo in the first cycle included in the high category with an average value of 68.2 while in the second cycle progressed with the category very high with an average value of 77.4, (ii) There is an increase in the learning outcomes of class II SDI Bontociniayo through the application of the Problem Based Introduction (PBI) method, both qualitatively and quantitatively. This can be seen in the table and explanation in the attachment, in the first cycle and second cycle of each action starting from action I to action II.In connection with the above results, the learning model is considered to be quite effective in teaching especially in the field of science studies, because it can improve student learning outcomes both in doing their assignments in school and providing opportunities for students to always try (experiment) in each activity learning so that they can be more motivated to achieve maximum achievement.

scholarly journals Implementasi Peraturan Gubernur Jawa Timur No. 27 Tahun 2016 Tentang Tarif Angkutan Penumpang pada Dinas Perhubungan Propinsi Jawa Timur

2021 ◽  
Vol 10 (1) ◽  
pp. 1-14
Author(s):  
Ignatius Adiwidjaja
Keyword(s):  
Government Policy ◽  
Public Transportation ◽  
Qualitative Method ◽  
Provincial Government ◽  
The Subject ◽  
The Government ◽  
Structure And Activity ◽  
Method Approach ◽  
Descriptive Method ◽  
Very High

Transportasi dan angkutan umum merupakan suatu persoalan yang selalu dihadapi oleh pemerintah di berbagai daerah di tanah air ini, terutama daerah yang memiliki suasana kota yang yang ramai karena  padatnya penduduk serta tingginya intensitas masyarakatnya diikuti dengan tidak sesuainya jumlah moda transportasi umum serta belum seimbangnya luas ruas jalan antar kota dalam propinsi yang  mempunyai struktur serta aktifitas penduduk sudah tergolong sagat tinggi. Regulasi kebijakan pemerintah propinsi Jawa Timur yang tertuang dalam Peraturan Gubernur Jawa Timur No. 27 Tahun 2016. Dinas perhubungan sebagai implementor, melakukan sosialisasi kepada masyarakat, serta menyediakan sarana sebagai pendukung dalam system transportasi di Jawa Timur. Dalam penelitian ini kami menggunakan metode kualitatif yang menghasilkan gambaran (deskripsi) mengenai hal-hal yang berkaitan dengan apa yang diteliti. Kualitatif sendiri merupakan wujud kata-kata dari pada deretan angka-angka. Pendekatan metode deskriptif dapat diartikan sebagai pemecahan masalah dengan menggambarkan atau melukiskan keadaan subjek atau objek penelitian, baik perilaku individu, kelompok masyarakat, lembaga-lembaga dan lain-lain sebagainya.Kata kunci : Implementasi, Pelayanan PublikABSTRACT. Public transportation and transportation is a problem that is always faced by the government in various regions in this country, especially areas that have a bustling city atmosphere due to overcrowding and high intensity of the community followed by mismatching the number of modes of public transportation and the imbalance of the size of roads inter-city in the province which has a structure and activity of the population is already classified as very high. East Java provincial government policy regulations contained in East Java Governor Regulation No. 27 of 2016. Transportation Agency as an implementor, conducts socialization to the community, and provides facilities as a support in the transportation system in East Java. In this study we used a qualitative method that produced a description (description) of matters relating to what was studied. Qualitative itself is a form of words rather than a row of numbers. Descriptive method approach can be interpreted as problem solving by describing or describing the state of the subject or object of research, both the behavior of individuals, community groups, institutions and so forth.Keywords: Implementation, Public Services

Inorganic Substances with Rubber-like Properties

1936 ◽  
Vol 9 (3) ◽  
pp. 422-425
Author(s):  
Kurt H. Meyer
Keyword(s):  
Molecular Weight ◽  
Common Knowledge ◽  
Elementary Cell ◽  
Double Refraction ◽  
Special Position ◽  
Inorganic Substances ◽  
The Subject ◽  
Elastic Form ◽  
Very High ◽  
Long Chains

Abstract Two inorganic substances with elasticity similar to that of rubber are described in the literature of the subject, viz., elastic sulfur and polyphosphonitrilic chloride. In this paper we shall deal with investigations of both. It is common knowledge that sulfur heated to 170° becomes highly viscous; if then cooled, e. g., by plunging into water, it yields an amorphous elastic product. If threads of this amorphous product are stretched, they show a double refraction, and, as Trilat has found, develop a fiber-diagram. With Go the author has examined this diagram, and deduced from it the following arrangement of the sulfur atoms: long chains of sulfur atoms, linked by strong homeopolar valences, are arranged parallel to the direction of stretching. Their special position in the elementary cell is shown in Fig. 1. In a recent publication, Warren has made it clear that ordinary sulfur is made up of 8-atom rings. The molecular weight of the elastic form Sn is not known, but seems to be very high. We know from earlier work that the melting of sulfur produces an equilibrium between the two forms, and this shifts, at higher temperatures, in favor of the chain-sulfur. About 1000 calories per gram atom S are consumed in the transformation of S8 into Sn.

Rabelais, François (c.1483–1553)

2018 ◽  
Author(s):  
Edwin M. Duval
Keyword(s):  
Private Life ◽  
Marguerite De Navarre ◽  
Public And Private ◽  
The Subject ◽  
Francis I ◽  
Very High

Rabelais, a French humanist and comic writer of the Renaissance, is best known for his chronicles of Gargantua and Pantagruel, in which coarse popular humour, fine Lucianic irony and staggering erudition are uniquely blended, and which claim to reveal, first appearances notwithstanding, ‘certain very high sacraments and dread mysteries, concerning not only our religion, but also our public and private life’ ([1532–52] 1955: 38). Rabelais has been subjected to the most contradictory interpretations and judgments. Like Erasmus, whom he admired, Rabelais was attacked in his own time by schismatic Protestants (most notably Calvin) and by reactionary Catholics (most notably the faculty of theology at Paris), as an obscene Lucianic atheist and a heretic. At the same time he was admired and supported by high-minded patrons including Francis I, the king’s devout sister Marguerite de Navarre, and Cardinal Jean Du Bellay. Even today Rabelais’ religion and philosophy are the subject of debate among scholars, while his work is known to non-specialists more for the ‘Rabelaisian’ ribaldry of a few pages than for the complex irony and profoundly humanistic design that characterize his works as a whole.

Sign in / Sign up

Export Citation Format

Share Document