CLEANUP OPERATIONS AFTER THE 1976 SS SANSINENA EXPLOSIONAN INDUSTRIAL PERSPECTIVE

1979 ◽  
Vol 1979 (1) ◽  
pp. 429-434
Author(s):  
John H. Hutchison
Keyword(s):  
Prolonged Exposure ◽  
Fuel Oil ◽  
Oil Removal ◽  
Advantages And Disadvantages ◽  
Long Period ◽  
Boat Traffic ◽  
Job Site ◽  
And Control ◽  
Oil Spill Cleanup ◽  
Harbor Area

ABSTRACT This paper outlines the efforts made for oil spill cleanup and control following the explosion on the SS Sansinena. It describes the layout and conditions encountered in the harbor area, such as prolonged exposure to fire, interaction with salvage operations, and ship and pleasure boat traffic. The main problem encountered was the fact that the fuel oil aboard was heavier than water, and hence sank to the bottom of the 60-foot-deep ship channel when the tanks ruptured. The methods and equipment employed in recovering the oil from the channel are described indicating the relative advantages and disadvantages. Some of the problems included visibility in deep water, methods to maximize oil in the pump effluent, and separation of oil and water at the job site. Additionally, the long period (120 days) required to operate booms and other gear at the site required logistics and maintenance support not normally encountered. Cleanup and oil removal services were also utilized during the salvage and removal of the ship which was cut into segments that were either towed away or lifted onto barges for movement to a scrap yard.

Peculiarities of improving interbudgetary relations in conditions of authorities’ decentralization

2020 ◽  
pp. 46-54
Author(s):  
Zenoviy Siryk
Keyword(s):  
Economic Development ◽  
Social Development ◽  
Social Services ◽  
The State ◽  
Major Objective ◽  
Formal Approach ◽  
Advantages And Disadvantages ◽  
Local Areas ◽  
And Control ◽  
Different Levels

Ukraine is a unitary state, yet historically various regions, oblasts, districts, and local areas have different levels of economic development. To secure sustainable economic and social development and provide social services guaranteed by the state for each citizen according to the Constitution, the mechanism of redistribution between revenues and expenditures of oblasts, regions, and territories through the budgets of a higher level is used. The paper aims to research the peculiarities of improving interbudgetary relations in conditions of authorities’ decentralization. The paper defines the nature of interbudgetary relations. The basic and reverse subsidies to Ukraine and Lvivska oblast are analyzed. The advantages and disadvantages the communities face at changing approaches to balancing local budgets are determined. Regulative documents that cover the interbudgetary relations in Ukraine are analyzed. Special attention is paid to the problem of local finances reforming, including the development of interbudgetary relations. The scheme of the economic interbudgetary relations system in Ukraine is developed. The ways to improve the system of interbudgetary relations in Ukraine are suggested. The negative and positive aspects, advantages, and disadvantages of the system of interbudgetary relations in Ukraine require the following improvements. 1. It is necessary to avoid the complete budget alignment in the process of budgets balancing by interbudgetary transfers as the major objective. 2. The interbudgetary transfers should be distributed based on a formal approach. 3. The changes have to be introduced to the calculation of medical and educational subsidies in terms of financial standard of budget provision to avoid the money deficit for coverage of necessary expenditures. 4. There is a need to improve interbudgetary relations at the levels of districts, villages, towns, and cities of district subordination. 5. Improvement of the mechanism of targeted benefits provision, their real evaluation, and control for the use of funds.

scholarly journals The Potential Use of Isothermal Amplification Assays for In-Field Diagnostics of Plant Pathogens

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2424
Author(s):  
Aleksandr V. Ivanov ◽  
Irina V. Safenkova ◽  
Anatoly V. Zherdev ◽  
Boris B. Dzantiev
Keyword(s):  
Molecular Diagnostics ◽  
Fungal Pathogens ◽  
Plant Pathogens ◽  
Isothermal Amplification ◽  
Detection Methods ◽  
Nucleic Acid Detection ◽  
Advantages And Disadvantages ◽  
Fungal Phytopathogens ◽  
Highly Sensitive Detection ◽  
And Control

Rapid, sensitive, and timely diagnostics are essential for protecting plants from pathogens. Commonly, PCR techniques are used in laboratories for highly sensitive detection of DNA/RNA from viral, viroid, bacterial, and fungal pathogens of plants. However, using PCR-based methods for in-field diagnostics is a challenge and sometimes nearly impossible. With the advent of isothermal amplification methods, which provide amplification of nucleic acids at a certain temperature and do not require thermocyclic equipment, going beyond the laboratory has become a reality for molecular diagnostics. The amplification stage ceases to be limited by time and instruments. Challenges to solve involve finding suitable approaches for rapid and user-friendly plant preparation and detection of amplicons after amplification. Here, we summarize approaches for in-field diagnostics of phytopathogens based on different types of isothermal amplification and discuss their advantages and disadvantages. In this review, we consider a combination of isothermal amplification methods with extraction and detection methods compatible with in-field phytodiagnostics. Molecular diagnostics in out-of-lab conditions are of particular importance for protecting against viral, bacterial, and fungal phytopathogens in order to quickly prevent and control the spread of disease. We believe that the development of rapid, sensitive, and equipment-free nucleic acid detection methods is the future of phytodiagnostics, and its benefits are already visible.

scholarly journals Facile Synthesis of Silica Composites with Oil Sorption Efficiency from a Vital Agricultural Waste of Corn Stalk Cultivated in Bishoftu, Ethiopia

2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
M. Kamaraj ◽  
Sudarshan Kamble ◽  
S. V. R. K. N. Sonia
Keyword(s):  
Agricultural Waste ◽  
Corn Stalk ◽  
Oily Wastewater ◽  
Oil Removal ◽  
Facile Synthesis ◽  
Environmental Implications ◽  
Batch Mode ◽  
Amorphous Nature ◽  
Oil Adsorption ◽  
Oil Spill Cleanup

This study is attempted to extract the amorphous silica composites using the combined HNO3 leaching-calcination (600°C/6 h) method from corn stalk harvested in Bishoftu, Ethiopia, owning to its profuse dumping, less cost, and negative environmental implications. The resultant composite characteristics such as amorphous nature are connected via the grain boundary which produces an agglomerated structure that has a disordered morphology, and the presence of siloxane and silanol groups, as well as additional functional groups, is reported. The synthesized product is applied in the removal of oil from synthetic oily wastewater (SYOWW) using batch mode delivering a maximum oil removal of up to 99%. The outcome of the study features the potential acclimatization of the Ethiopian corn stalk as a substitute precursor for the production of silica composites which has a potential oil adsorption capacity that can be used for oil spill cleanup.

scholarly journals The multilevel inverter with clamped-diode

2019 ◽  
Vol 14 (3) ◽  
pp. 1189
Author(s):  
Trong-Thang Nguyen
Keyword(s):  
Numerical Simulation ◽  
Circuit Design ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Control Circuit ◽  
Multilevel Inverter ◽  
Power Circuit ◽  
Advantages And Disadvantages ◽  
Multi Level ◽  
And Control

<p>In this study, the author analyzes the advantages and disadvantages of multi-level inverter compared to the traditional two-level inverter and then chose the suitable inverter. Specifically, the author analyzes and designs the three-level inverter, including the power circuit design and control circuit design. All designs are verified through the numerical simulation on Matlab. The results show that even though the three-level inverter has a low number of switches (only 12 switches), but the quality is very good: the total harmonic distortion is small; the output voltage always follows the reference voltage.</p>

The Use of Vibration as a Means of Industrial Drive

1947 ◽  
Vol 157 (1) ◽  
pp. 20-31
Author(s):  
C. A. M. Thornton
Keyword(s):  
Natural Frequency ◽  
Transverse Vibration ◽  
Vibration Amplitude ◽  
Electrical Excitation ◽  
Advantages And Disadvantages ◽  
Transverse Vibrations ◽  
Industrial Drive ◽  
The Subject ◽  
And Control

The application of vibration as a means of industrial drive has been considerably developed in the last twenty years. Starting from the obvious application of screening, it has been extended to conveying, heat interchanging, consolidation of material in packages to reduce shipping space, keeping material “fluid” in hoppers and chutes, hammering, etc. The paper discusses that part of the subject involved in the production and control of the vibration by mechanical or electrical means under all conditions of load. Formulae are developed for calculation of spring strength and for the calculation of the spring dimensions, and for the avoidance of spring fatigue. The various methods of electrical excitation are compared, and the relative advantages and disadvantages are discussed. The desirable instrument equipment is described, including the remote indication of vibration amplitude. A method is outlined by which it is claimed that vibration can be maintained constant at all loads and at any desired frequency. The testing of vibrating drives at the manufacturer's works and on site is discussed. In an Appendix to the paper the problem of transverse vibrations in long vibrating conveyors is treated mathematically, and a formula is developed for the natural frequency of transverse vibration of a conveyor of any uniform section and of any length.

scholarly journals Particles Matters Accumulation and Anatomical Leaf Properties of Three Tree Species Growing in the Industrial Area in Jeddah, Saudi Arabia

2015 ◽  
Vol 26 (2) ◽  
pp. 23-32
Author(s):  
Al-Toukhy s Al-Toukhy s
Keyword(s):  
Saudi Arabia ◽  
Tree Species ◽  
Coal Ash ◽  
Industrial Area ◽  
Fuel Oil ◽  
Characteristic Matrix ◽  
Lawsonia Inermis ◽  
Cell Region ◽  
Leaf Properties ◽  
And Control

Particles matters accumulation and anatomical leaf properties of Camphor (Cinnamomum camphora), Henna (Lawsonia inermis), and Bougainvillea (Bougainvillea spectabilis) trees growing in the industrial zone in Jeddah - Saudi Arabia and Hada Al-Shame area (control) was done. The leaf properties of all tree species growing in the industrial and control showed that each stoma had a raised edge over the guard cell region. The guard cells appeared more shrunken on the polluted leaves as compared with unpolluted leave. The results indicated that the most deposition particles on leaf surfaces of all tree species were: soot (C) and soil dust with characteristic matrix elements (Si, Al, Mg, Ca, K); fuel oil particles rich in Al, Si, Ca, and Pb; coal ash particles containing C, Al, Si, K, Ca, S; and Pb. As a result, leaves of those plant species may be used as bio-indicators for the assessment of particular matters in the industrial areas.

The Effects of Task Characteristics on the Organisation of the Team

1981 ◽  
Vol 25 (1) ◽  
pp. 546-550 ◽  
Author(s):  
John Hallam ◽  
Robert B Stammers
Keyword(s):  
Team Performance ◽  
Experimental Work ◽  
Command And Control ◽  
Task Characteristics ◽  
Machine System ◽  
Advantages And Disadvantages ◽  
Series Of Experiments ◽  
And Control

In the multiman-machine system, the organisation of the team appears to depend to a great extent on the characteristics of the tasks to be performed. After a discussion of the factors contributing to team performance, and the demands imposed by tasks, the results of a series of experiments are described in which certain task characteristics (complexity and organisation) of simulated command-and-control tasks are varied to investigate the performance of two-man teams working in either a vertical (serial) or a horizontal (parallel) team organisation. Evidence from this experimental work suggests that both types of team organisation may have their advantages and disadvantages in relation to different task characteristics.

scholarly journals Vaccine and Therapeutic Options To Control Chikungunya Virus

2017 ◽  
Vol 31 (1) ◽  
Author(s):  
Ann M. Powers
Keyword(s):  
Vector Control ◽  
Future Development ◽  
Chikungunya Virus ◽  
Therapeutic Options ◽  
Protective Measures ◽  
Vector Borne Diseases ◽  
Advantages And Disadvantages ◽  
Vector Borne ◽  
And Control ◽  
Integrated Vector Control

SUMMARYBeginning in 2004, chikungunya virus (CHIKV) went from an endemic pathogen limited to Africa and Asia that caused periodic outbreaks to a global pathogen. Given that outbreaks caused by CHIKV have continued and expanded, serious consideration must be given to identifying potential options for vaccines and therapeutics. Currently, there are no licensed products in this realm, and control relies completely on the use of personal protective measures and integrated vector control, which are only minimally effective. Therefore, it is prudent to urgently examine further possibilities for control. Vaccines have been shown to be highly effective against vector-borne diseases. However, as CHIKV is known to rapidly spread and generate high attack rates, therapeutics would also be highly valuable. Several candidates are currently being developed; this review describes the multiple options under consideration for future development and assesses their relative advantages and disadvantages.

scholarly journals Empirical Research on the Application of Online Teaching in Chinese Colleges and Universities Under the Situation of Novel Coronavirus Pneumonia Prevention and Control

2020 ◽  
Vol 15 (11) ◽  
pp. 119 ◽  
Author(s):  
Tiejun Zhu
Keyword(s):  
Online Education ◽  
Prevention And Control ◽  
Online Teaching ◽  
Large Scale ◽  
Colleges And Universities ◽  
Chinese Government ◽  
Advantages And Disadvantages ◽  
Teachers And Students ◽  
Novel Coronavirus ◽  
And Control

At the turn of 2019-2020, a new epidemic broke out in China. China has entered the critical stage of epidemic prevention and control. And The severe situation has led to the failure of normal opening of new semester in Chinese colleges and universities. In order to effectively guarantee the education, teaching and talent cultivation in colleges and universities, the Ministry of education of China has rapidly put forward the requirements of launching online teaching. Therefore, under the situation of Novel Coronavirus Pneumonia (Hereinafter referred to as 2019-nCoV) prevention and control, online teaching in Chinese colleges and universities is widely used and develops rapidly. However, the demand for online education has been released in a short time and on a large scale, and each online teaching platform has encountered unprecedented pressure and challenges. In this regard, based on the situation of 2019-nCoV prevention and control in China, this paper demonstrates how the Chinese government deploy online teaching in an all-round way with specific measures, how the Chinese colleges and universities implement massive online teaching quickly, how teachers and students adapt to online teaching quickly. At the same time, this paper carries out empirical analysis to show the process and effectiveness of online teaching in Chinese colleges and universities in the unprecedented state of 2019-nCoV prevention and control with specific examples. On this basis, it analyzes and summarizes the advantages and disadvantages, so as to facilitate the later improvement and provide reference.

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