Outpatient Hysteroscopic Polypectomy: Bipolar Energy System (Versapoint®) versus Mechanical Energy System (TRUCLEAR System®) - Preliminary Results

2015 ◽  
Vol 80 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Jennifer Rovira Pampalona ◽  
Maria Degollada Bastos ◽  
Gemma Mancebo Moreno ◽  
Esther Ratia Garcia ◽  
Andrea Buron Pust ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Energy System ◽  
Preliminary Results ◽  
Bipolar Energy

Outpatient hysteroscopic polypectomy: bipolar energy system (Versapoint®) versus diode laser – randomized clinical trial

2015 ◽  
Vol 32 (3) ◽  
pp. 196-200 ◽  
Author(s):  
Maria D. Lara-Domínguez ◽  
Jose E. Arjona-Berral ◽  
Rafaela Dios-Palomares ◽  
Camil Castelo-Branco
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
Diode Laser ◽  
Energy System ◽  
Bipolar Energy

Mechanical Analysis of a Solar-Powered Solid State Engine

1985 ◽  
Vol 9 (3) ◽  
pp. 137-141 ◽  
Author(s):  
H. Tobushi ◽  
J.R. Gahoon
Keyword(s):  
Solid State ◽  
Solar Energy ◽  
Photovoltaic Effect ◽  
Mechanical Energy ◽  
Energy System ◽  
Mechanical Analysis ◽  
Total Efficiency ◽  
Nitinol Wire ◽  
Higher Power ◽  
Solar Powered

The mechanical principle of a solar-powered solid state engine utilizing the shape-memory effect is analyzed. The performance of a differential pulley Nitinol engine is discussed and it is calculated that a small, solar-powered differential pulley Nitinol engine could produce up to 15W with a single Nitinol wire, A higher power solar Nitinol engine producing up to 15 kW is possible by using larger Nitinol wire, and over 1 MW may be expected by applying the higher power engine system. The size of the solar energy collector needed to generate mechanical energy via a Nitinol engine is estimated to be about 0.02 m2/W and the total efficiency of the engine predicted to be about 4%, The overall efficiency and economics of a solar-powered Nitinol engine should be in the same order as that of solar energy system utilizing the photovoltaic effect.

scholarly journals Review on Optimising Solar PV Efficiency by Using Tracking and Cooling System

2019 ◽  
Vol 5 (4) ◽  
pp. 6
Author(s):  
Anil Khatri ◽  
Prof. Nitin Tenguria
Keyword(s):  
Solar Energy ◽  
Energy Demand ◽  
Fossil Fuels ◽  
New Technologies ◽  
Cooling System ◽  
Mechanical Energy ◽  
Primary Source ◽  
Energy System ◽  
Solar Pv ◽  
Photovoltaic Panel

The increasing energy demand, continuous drawback of the existing sources of fossil fuels and increasing concern about environmental pollution pushed researchers to explore new technologies for the production of electricity from clean sources, renewable such as solar, wind etc. Solar energy is the oldest primary source of energy. It is a source of clean, renewable energy and it is found in abundance in every part of the world. Using solar energy is possible to convert it into mechanical energy or electricity with adequate efficiency. In this paper of the present of principal of solar cell and the temperature effect. And the Information about the quality and amount of solar energy available at a specific location is of prime importance for the development of a solar energy system. However, the amount of electricity that is obtained is directly proportional to the intensity of sunlight falling on the photovoltaic panel.

scholarly journals Footstep Power Generation Using Piezoelectric Material

2021 ◽  
Vol 9 (VII) ◽  
pp. 3623-3626
Author(s):  
Gaurav Thapliyal
Keyword(s):  
Power Generation ◽  
Mechanical Energy ◽  
Cost Effective ◽  
Electrical Energy ◽  
Energy System ◽  
Energy Resources ◽  
Piezoelectric Sensors ◽  
Shopping Malls ◽  
Railway Stations ◽  
Generation Technique

In the day-to-day life, the utilization of power turns of being necessary for each work. This paper focuses on designing a setup that leads to the generation of electrical energy which is going to waste when humans are walking. There are different methods used to produce energy like conventional and non-conventional methods. In this project, we are doing generation of power by walking or running. Power can be generated by walking on the stairs. The generated power will be stored and then we can use it for domestic purposes. The paper proposes a novel technique for the creation of power utilizing piezoelectric sensors kept along the footpaths which can be ready to charge the battery and ready to supply the force at whatever time of our prerequisite. The non-conventional energy system is very essential currently to our nation. Nonconventional energy using footstep is converting mechanical energy into Electrical Energy. Due to this a lot of energy resources have been exhausted and wasted. This system can be installed at homes, schools, colleges, where people move around the clock. The footstep power generation technique through piezoelectric sensors produces electrical force by changing piezoelectric force generation framework is that is sheltered and secure to utilize it does not make any issue or distress for the general population strolling through the footpath, and it is a free strategy. This project will be cost-effective and easy to be installed in populated areas like railway stations, bus stands, and shopping malls. Our project is cost-effective and easy to implement.

scholarly journals Kegiatan Olahraga Dan Kesinambungan Energi

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Eka Supriatna
Keyword(s):  
Mechanical Energy ◽  
Energy System ◽  
Physical Education Teachers ◽  
Energy Sustainability ◽  
Energy Supply System ◽  
System A ◽  
Energy Needs ◽  
Measure Heart Rate ◽  
Sporting Activities ◽  
Sports Activities

Di lapangan seorang pelatih sukar mengukur seberapa besar energi yang sudah dikeluarkan oleh seorang atlit, biasanya penanda yang paling mudah adalah  dengan mengukur denyut jantung di pergelangan tangan. Namun itu tidak cukup sebagai penanda seberapa besar energi yang sudah digunakan, tetapi harus dikaji lebih dalam melalui kajian ilmu faal. Berbicara olahraga tidak terlepas dari sistem energi yang digunakan. Karena dalam aktivitas olahraga  terjadi sebuah perubahan energi kimia menjadi energi mekanik. Oleh karena itu, bagi yang berkecimpung dalam bidang olahraga merupakan syarat mutlak untuk mengetahui persediaan sistem energi. Pengetahuan ini tidak hanya penting untuk pelatih, guru pendidikan jasmani, tetapi juga penting bagi atlit. Kita mengenal beberapa macam sistem energi yang berhubungan dengan aktivitas olahraga antara lain; sistem ATP-PC, sistem asam laktat dan sistem aerobik yang semuanya itu sebagai penyedia kebutuhan energi dalam aktivitas olahraga. Kata Kunci : kegiatan olahraga, kesinambungan energi.   Abstract: In the field, a coach is difficult to measure how much energy has been issued by an athlete which the most convenient marker usually is to measure heart rate wrist. It was not enough to be a marker of how much energy is already used, but is should be studied more deeply through the study of physiology. Talking about sport, it can not be separated from the energy system used. Because in sporting activities, there was a change from the chemical energy into mechanical energy. Therefore, for those working in the field of sport is absolutely necessary to know the energy supply system. This change is not only important for coaches, physical education teachers, but also important for athletes. We know some kind of energy systems associated with sports activities, such as the ATP-PC system, a system of lactic acid and all the aerobic system as a provider of energy needs in sporting activities. Key words : sports, energy sustainability.

scholarly journals Time-Dependent Lagrangian Energy Systems on Supermanifolds with Graph Bundles

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Cansel Aycan ◽  
Simge Şimşek
Keyword(s):  
Graph Theory ◽  
Mechanical Energy ◽  
Energy System ◽  
Geometric Interpretation ◽  
Time Dependent ◽  
Jet Bundles ◽  
Graph Manifold ◽  
Body And Soul ◽  
Energy Equations ◽  
Graph Bundle

The aim of this article is firstly to improve time-dependent Lagrangian energy equations using the super jet bundles on supermanifolds. Later, we adapted this study to the graph bundle. Thus, we created a graph bundle by examining the graph manifold structure in superspace. The geometric structures obtained for the mechanical energy system with superbundle coordinates were reexamined with the graph bundle coordinates. Thus, we were able to calculate the energy that occurs during the motion of a particle when we examine this motion with graph points. The supercoordinates on the superbundle structure of supermanifolds have been given for body and soul and also even and odd dimensions. We have given the geometric interpretation of this property in coordinates for the movement on graph points. Lagrangian energy equations have been applied to the presented example, and the advantage of examining the movement with graph points was presented. In this article, we will use the graph theory to determine the optimal motion, velocity, and energy of the particle, due to graph points. This study showed a physical application and interpretation of supervelocity and supertime dimensions in super-Lagrangian energy equations utilizing graph theory.

scholarly journals Analysis of the Polish Hydrogen Strategy in the Context of the EU’s Strategic Documents on Hydrogen

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6382
Author(s):  
Lidia Gawlik ◽  
Eugeniusz Mokrzycki
Keyword(s):  
Energy Transport ◽  
Mechanical Energy ◽  
Energy System ◽  
The European Union ◽  
Hydrogen Economy ◽  
Rational Solutions ◽  
Industrial Sectors ◽  
Depth Analysis ◽  
Production Of Hydrogen ◽  
Climate Neutrality

In December 2019, the European Commission unveiled an ambitious project, the European Green Deal, which aims to lead the European Union to climate neutrality by 2050. This is a significant challenge for all EU countries, and especially for Poland. The role of hydrogen in the processes of decarbonization of the economy and transport is being discussed in many countries around the world to find rational solutions to this difficult and complex problem. There is an ongoing discussion about the hydrogen economy, which covers the production of hydrogen, its storage, transport, and conversion to the desired forms of energy, primarily electricity, mechanical energy, and new fuels. The development of the hydrogen economy can significantly support the achievement of climate neutrality. The belief that hydrogen plays an important role in the transformation of the energy sector is widespread. There are many technical and economic challenges, as well as legal and logistical barriers to deal with in the transition process. The development of hydrogen technologies and a global sustainable energy system that uses hydrogen offers a real opportunity to solve the challenges facing the global energy industry: meeting the need for clean fuels, increasing the efficiency of fuel and energy production, and significantly reducing greenhouse gas emissions. The paper provides an in-depth analysis of the Polish Hydrogen Strategy, a document that sets out the directions for the development of hydrogen use (competences and technologies) in the energy, transport, and industrial sectors. This analysis is presented against the background of the European Commission’s document ‘A Hydrogen Strategy for a Climate-Neutral Europe’. The draft project presented is a good basis for further discussion on the directions of development of the Polish economy. The Polish Hydrogen Strategy, although it was created later than the EU document, does not fully follow its guidelines. The directions for further work on the hydrogen strategy are indicated so that its final version can become a driving force for the development of the country’s economy.

scholarly journals Time series of useful energy consumption patterns for energy system modeling

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Jan Priesmann ◽  
Lars Nolting ◽  
Christina Kockel ◽  
Aaron Praktiknjo
Keyword(s):  
Time Series ◽  
Energy Consumption ◽  
Census Data ◽  
Mechanical Energy ◽  
System Modeling ◽  
Energy System ◽  
Consumption Patterns ◽  
Data Movement ◽  
Energy Consumption Patterns ◽  
Energy System Modeling

AbstractThe analysis of energy scenarios for future energy systems requires appropriate data. However, while more or less detailed data on energy production is often available, appropriate data on energy consumption is often scarce. In our JERICHO-E-usage dataset, we provide comprehensive data on useful energy consumption patterns for heat, cold, mechanical energy, information and communication, and light in high spatial and temporal resolution. Furthermore, we distinguish between residential, industrial, commerce, and mobility consumers. For our dataset, we aggregate bottom-up data and disaggregate top-down data both to the NUTS2 level. The NUTS2 level serves as an interface to validate our combined method approach and the calculations. We combine a multitude of data sources such as weather time series, standard load profiles, census data, movement data, and employment figures to increase the scope, validity, and reproducibility for energy system modeling. The focus of our JERICHO-E-usage dataset on useful energy consumption might be of particular interest to researchers who analyze energy scenarios where renewable electricity is largely substituted for fossil fuel (sector coupling).

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

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