Investigation of Deformation of Rock Samples

2017 ◽  
Vol 744 ◽  
pp. 61-65
Author(s):  
Mikhail Guzev ◽  
Vladimir Makarov
Keyword(s):  
Specific Volume ◽  
Mathematical Methods ◽  
Short Term ◽  
Volume Deformation ◽  
Middle Term ◽  
Rock Samples ◽  
The Mathematical Model ◽  
Theoretical Results ◽  
Good Coincidence

Deformation of rock samples compressed up to failure has been studied in laboratory. A system of trustworthy deformational precursors of the failure stage has been developed. The system includes long-term, middle-term and short-term precursors, which correspond to the threshold of dilatancy, change of the specific volume deformation, and jump of the specific volume deformation increments, respectively. Proposed methods of the complex research include deformation and mathematical methods. The mathematical model of deformation in samples of rocks at uniaxial compression is founded on hypothesis of self-equilibrium stresses. The model had been successfully used for description of oscillating deformation. Good coincidence between the experimental and theoretical results has been observed.

Musikalisasi Syi’ir Aqoid Kiai Zaini Mun’im dan Budidaya Tanaman Obat Keluarga (Toga) di Pesantren Nurul Jadid Probolinggo

2020 ◽  
Vol 1 (1) ◽  
pp. 47-58
Author(s):  
Khodijatul Qodriyah
Keyword(s):  
Herbal Medicine ◽  
Herbal Medicines ◽  
Successful Implementation ◽  
Short Term ◽  
Middle Term

The lack of students’ knowledge of their teachers’ works and the less of their consciousness to the environment are crucial problems in some islamic boardingschool, especially in Nurul Jadid. These issues will be settled by implementation of religious preaching (dakwah) with poem (syi’ir) in Syu’abul Iman of Kiai Zaini Mun’im and prefentive action to the illness through herbal medicines of family crops medicine (tanaman obat keluarga). The program is undertaken with some phases, including planting family crops medicine, making herbal medicines, musicalisation of poem in book of Syu’abul Iman, socialization of the herbal medicine and musical poem of Syu’abul Iman. These phases have been structured with long-term, middle-term, and short-term programs which were finished during approximately 4 months (Augustus – November 2019). The involvement of many parties, such as activists of environment in Nurul Jadid, has strongly influenced on the successful implementation of these programs.Keywords: Family Crops Medicine, Nurul Jadid Islamic Boardingschool, Book of Syu’abul Iman

scholarly journals The Use of Ketamine, Xylazine and Midazolam Combination for Total Intravenous Anesthesia (Tiva) in Surgical Removal of Abdominal Testis at Stallion

2014 ◽  
Vol 37 (2) ◽  
pp. 185-188
Author(s):  
Bojan D. Toholj ◽  
Velibor D. Kujača ◽  
Milenko R. Stevančević ◽  
Jovan M. Spasojević ◽  
Ozren B. Smolec
Keyword(s):  
Surgical Procedures ◽  
Total Intravenous Anesthesia ◽  
Surgical Removal ◽  
Short Term ◽  
Intravenous Anesthesia ◽  
Middle Term ◽  
Intravenous Drip ◽  
Anesthesia Monitoring ◽  
Abdominal Testis

AbstractEquine veterinarians frequently anesthetize horses. In majority of cases performing short-term anesthesia (duration, 20 minutes). But there is substantial need for long term anesthesia. The aim of this work is to present our experience with a long term and short term total intravenous anesthesia in horses. In this paper we are presenting results of anesthesia monitoring of a horse undergoing surgical remove of an abdominal testis (complete abdominal cryptorchid). Sedation of the horsewas conducted with xylazine, 1.0 mg/kg, iv, and midazolam 0.06 mg/kg, iv. The total anesthesia was induced using a combination of ketamine 2.2mg/kg/iv, and midazolam 0.1 mg/kg/iv. After induction the horse was restrained and anesthesia was maintained with continuous intravenous drip of a combination of drugs mixed in infusion bottle with midazolam (0.002 mg/kg/min), ketamine (0.03 mg/kg/min), and xylazine (0.016 mg/kg/min). Additional ketamine (0.03 mg/kg) and midazolam 0.03 mg/kg/iv was administered if the horse moved its head or limbs during the procedure. The duration of anesthesia was 90 minutes. During this time cardiopulmonary parameters and reflexes were monitored continuously.The recovery of anesthesia was 30 minutes and horse stood on the first attempt 40 minutes. Midazolam, ketamine, and xylazine in combination produced TIVA in this horse and can be used for short term, middle term, and longer lasting surgical procedures in the field.

The Mathematical Modeling Stages of Combining the Carriage of Goods for Indefinite, Fuzzy and Stochastic Parameters

2020 ◽  
Vol 12 (7) ◽  
Author(s):  
Sergiy Kotenko ◽  
◽  
Vitalii Nitsenko ◽  
Iryna Hanzhurenko ◽  
Valerii Havrysh ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Radical Change ◽  
Short Term ◽  
Best Value ◽  
Stochastic Parameters ◽  
Mode Of Transportation ◽  
Cargo Transportation ◽  
Risk Parameters ◽  
The Mathematical Model

Combined cargo transportation in Ukraine is characterized by the presence of uncertain risks. The aim of the article was to propose a mathematical model for choosing the mode of transportation that would correspond to the best value of the integral objective function in the presence of fuzzy, stochastic and uncertain risk parameters. The efficiency of the mathematical model provided the possibility of forming not only long-term forecasts that require significant time, but also short-term forecasts in real time. This allows to quickly change routes and conditions of transportation. Practical testing of the mathematical model revealed the assimilating nature of some uncertain risks. The results of the analysis are given in the article. The realization of such a risk leads to a radical change in all conditions of transportation. Long-term forecasts allow to predict new routes and conditions of transportation.

FAIR TRANSITION FROM DEFINED BENEFIT TO TARGET BENEFIT

2021 ◽  
pp. 1-32
Author(s):  
Xiaobai Zhu ◽  
Mary Hardy ◽  
David Saunders
Keyword(s):  
Risk Sharing ◽  
Defined Benefit ◽  
Short Term ◽  
Intergenerational Risk ◽  
Transition Plan ◽  
Intergenerational Risk Sharing ◽  
Theoretical Results ◽  
Scenario Generator

ABSTRACT Target benefit (TB) plans that incorporate intergenerational risk sharing have been demonstrated to be welfare improving over the long term. However, there has been little discussion of the short-term benefits for members in a defined benefit (DB) plan that is transitioning to TB. In this paper, we adopt a two-step approach that is designed to ensure the long-term sustainability of the new plan, without unduly sacrificing the benefit security of current retirees. We propose a cohort-based transition plan for reducing intergenerational inequity. Our study is based on simulations using an economic scenario generator with some theoretical results under simplified settings.

Briquettes from Tobacco Stems as the New Alternative Energy

2018 ◽  
Vol 19 (2) ◽  
pp. 73-80 ◽  
Author(s):  
Okta Prima Indahsari
Keyword(s):  
Alternative Energy ◽  
Calorific Value ◽  
Volatile Matter ◽  
High Availability ◽  
Added Value ◽  
Fixed Carbon ◽  
Short Term ◽  
Middle Term ◽  
Physical Laboratory

Tobacco briquettes is the new alternative energy developed in PTPerkebunan Nusantara X (PTPN X). The tobacco briquettes research isimportant for PTPN X because of three reasons: high availability of theraw material, it can be used as substitution for coal briquettes, andexpected for industrial scale. Currently, many researches have beenconducted for biomass-briquettes but only few who used tobacco. PTPN Xhave been cultivated tobacco only for its leaves which latter used for cigarand the rests were thrown as waste. By conducting the tobacco briquettesresearch, many forms of utilization are expected. For short term, the aimof this research is generating a diversification of added value - producfrom tobacco. For middle term, PTPN X is expected to be the role modelfor the tobacco growers. For long term, PTPN Xl’s goal is to decreasecoal briquettes usage and break the negative stigma of tobacco.Briquetting process was conducted in Physical Laboratory of TobaccoResearch of Jember and the observation located in Tobacco ProcessingBarn of Ajong Gayasan PTPN X. Analysis of proximate test showed thatthe moisture content of tobacco briquettes with cassava starch as adhesivewas 8.00 to 8.97%, the volatile matter was 49.60 to 41.13%, the ashcontent was 9.93 to 7.89%, the fixed carbon was 32.47% to 42.01%, thesulphur content was 1.02 to 0.49%, the bulk density was from 0.35% to0.41%, the calorific value was from 4,285 to 4,586 cal/gr, and flammableduration was from 592 to 697 minutes. The briquetting process did notaffect the taste of leaves as cigar material.

Il ruolo della previsione nel processo decisionale*

1985 ◽  
Vol 3 (3) ◽  
pp. 189-200
Author(s):  
Ornello Vitali
Keyword(s):  
Present Situation ◽  
Good Information ◽  
Short Term ◽  
Middle Term ◽  
The Future ◽  
Future Events

Abstract Though undertakings prefer, usually, to concentrate on short-term previsions, it seems essential for them to develop middle-term and also long-term forecasting.Taking into consideration the interdependence among these three kinds of forecasts, it is unavoidable the suggestion to make an effort to look not only to the next future, but much further, in such a way to reinforce the quality of previsions.To forecast future events, it is important a good information about the present situation, whilst to understand the actual problems it is essential to be able to foresee the future.

The Research of High-Resolution Sequence Stratigraphy of Putaohua Reservoir in Daan Oilfield

2013 ◽  
Vol 838-841 ◽  
pp. 1843-1846
Author(s):  
Ting Ting Li ◽  
Yue Shi ◽  
You Hai Sun ◽  
Ming Qin
Keyword(s):  
High Resolution ◽  
Sequence Stratigraphy ◽  
Geophysical Data ◽  
Short Term ◽  
Middle Term ◽  
Sequence Stratigraphic ◽  
Stratigraphic Framework ◽  
Basic Characteristics ◽  
High Resolution Sequence Stratigraphy

By using geological and geophysical data and according to the basic characteristics of sequence boundary, Putaohua Reservoir in Daan Oilfield is divided into a rise hemicycle in long-term cycles, a full middle-term cycle, nine short-term cycles and a number of ultra-short-term cycles.The high-resolution sequence stratigraphic framework of Putaohua reservoir under monosandbody rank is established, and a set of techniques and methods to high-resolution sequence stratigraphy correlation in shallow delta is summed up.

scholarly journals Informal Education as a Method of Young Specialist`s Anxiety Overcoming

2020 ◽  
pp. 87-92
Author(s):  
Nataliia Rubel
Keyword(s):  
Work Experience ◽  
Informal Education ◽  
Educational Programs ◽  
Middle Level ◽  
Professional Activity ◽  
Short Term ◽  
Middle Term ◽  
Significant Difference ◽  
Situational Anxiety

The article shows the effectiveness of informal education assistance as a method of young specialist`s anxiety overcoming study. The sample consisted of 150 people between the ages of 21 and 49, divided into three groups. The first group included 44 people, short-term students, the second group (60 people) – middle-term students, and the third group (46 people) – long-term informal education assistance courses. We used Spilberger-Khanin`s anxiety test to define the level of personal and situational anxiety. To define professional difficulties, we used a half-structured interview and self-report. Short-term educational programs students have a low level of personal anxiety and middle-level situational anxiety, which changed slightly after the educational program (the difference is insignificant). The members of this group, as usual, have about 2 years of work experience and apply for academic help on specific professional issues. Middle-term educational programs participants mostly do not have work experience are somewhat confused about their professional specialization (for example: «I want to work with children or with adults, I do not know», «I want certain instruments, but I am not sure if I need them»), do not see the point of an in-depth study that or another theme. At the beginning of the course, they have a high level of personal and situational anxiety. They try to get the basics for the future work, quite quickly overcome the confusion, in studying situational anxiety of this group decreased with a significant difference (p < 0.05). Examined members of long-term educational programs have a middle level of individual and situational anxiety at the beginning. They try to understand many professional issues and feel tension and confusion. Situational anxiety in this group decreased with a significant difference (p < 0.05) in the process of studying. Members of this group feel the necessity to set goals and to plan their professional activity (for example: «I do not know where to start», «I do not understand why we need to do this», «I need consistency in work»), that is why they choose programs with a significant substance and content. The proposed system of educational assistance is based on the problem-oriented approach. We have identified the lack of beginner’s practical skills, tools, and professional activity techniques as the main problem that leads to difficulties during a professional crisis. We suppose that overcoming this deficit affects changes in specialists’ activity quality and their psycho-emotional condition. Our study results suggest that the proposed program of informal education has a positive effect on overcoming anxiety during the professional development crisis.

scholarly journals Capillary transport in paper porous materials at low saturation levels: normal, fast or superfast?

2020 ◽  
Vol 476 (2244) ◽  
pp. 20200488
Author(s):  
Alex V. Lukyanov ◽  
Vladimir V. Mitkin ◽  
Tristan Pryer ◽  
Penpark Sirimark ◽  
Theo G. Theofanous
Keyword(s):  
Porous Materials ◽  
Diffusion Model ◽  
Field Measurements ◽  
Capillary Transport ◽  
Liquid Saturation ◽  
Term Evolution ◽  
Low Levels ◽  
The Mathematical Model ◽  
Theoretical Results

The problem of capillary transport in fibrous porous materials at low levels of liquid saturation has been addressed. It has been demonstrated that the process of liquid spreading in this type of porous material at low saturation can be described macroscopically by a similar super-fast, nonlinear diffusion model to that which had been previously identified in experiments and simulations in particulate porous media. The macroscopic diffusion model has been underpinned by simulations using a microscopic network model. The theoretical results have been qualitatively compared with available experimental observations within the witness card technique using persistent liquids. The long-term evolution of the wetting spots was found to be truly universal and fully in line with the mathematical model developed. The result has important repercussions for the witness card technique used in field measurements of the dissemination of various low-volatility agents in imposing severe restrictions on collection and measurement times.

scholarly journals Investigation of the thermal state of the elements of a technological electron beam gun under long–term operating conditions

2021 ◽  
Vol 2077 (1) ◽  
pp. 012008
Author(s):  
I A Kharitonov ◽  
A L Goncharov ◽  
E K Titarev ◽  
A V Nekhoroshev
Keyword(s):  
Thermal State ◽  
Critical Value ◽  
Operating Conditions ◽  
Electron Gun ◽  
Short Term ◽  
Operating Modes ◽  
Cathode Assembly ◽  
Forced Cooling ◽  
The Mathematical Model

Abstract The paper presents the results of a study of the thermal state of the elements of the cathode assembly of the ELA–15 welding electron gun. It was revealed that in short–term operating modes of the gun (up to 60 minutes) at any energy parameters of heating the hexaboride cathode, it is possible not to use forced cooling of the cathode assembly. The case temperature in such modes did not exceed 30°C. The increase in the temperature of the gun body occurred 15 minutes after the start of heating the cathode. In long–term operating modes with forced cooling of the gun, the temperature of the gun body increased by 2 – 3°C and remained stable throughout the operation. When the cooling was turned off, the temperature of the gun body reached a critical value in 60 minutes. The section of natural cooling of the cathode obtained in the work, which appears when the heating of the cathode is stopped, is well approximated by a power function. It is convenient to use this dependence to verify the mathematical model of the thermal state of the electron gun.

Sign in / Sign up

Export Citation Format

Share Document