Charge Dissipation Behavior on the Insulating Polyimide Backsheet in Photovoltaic System

Deterioration of electric properties will be generated by the accumulation of surface charge on photovoltaic backsheet in the insulating system of photovoltaic (PV) system. The phenomena of potential induced degradation (PID) could be verified in the insulating Polyimide (PI) backsheet of PV module. In the field of photovoltaic system, PI has been found a special insulating backsheet that work in a mild condition. If the dynamic behaviors of the charge in the insulating backsheet could be understand, unexpected flashover events will be avoided. Thus, the mechanism of surface charge decay of PI should be explored under steady condition. The effect of accumulation of surface charge was explored on PI dielectric under constant ambient temperatures in this paper. The present investigation will contribute greatly toward the early potential induced degradation phenomenon of PV system.

Numerical Analysis of a Water-Cooled Condenser at Startup Conditions for Refrigeration Applications Supported with Experiments

Refrigeration for commercial purposes is one of the industrial sectors with the largest energy consumption in the global market. Therefore, research and development of more efficient components such as compressors, condensers, and refrigerants continue to render promising results in terms of GWP and operational costs. However, Due to the urgency typically found in industry to develop prototypes, finding scalable solutions can be challenging. Arguably, this is the case for condenser and evaporators that are designed and assembled under the assumption that refrigeration systems operate at steady condition, where in real circumstances such systems operate under transients based on ambient temperatures or unfavorable startup conditions. The aim of this study is to characterize the thermal and fluid dynamics behavior of refrigerant R404a in a water-cooled condenser at startup conditions. The boundary conditions to solve the CFD simulations are taken from experimental values and set as user defined functions in a commercial software. The results displayed the time dependent oscillatory phase-transition details of the refrigerant throughout the domain.

Accelerating applications of robot’s in the supply chain management: A review

The leeway of robots in the Supply chain industry is gleaming. Creating a marketplace demand will keep on urging automation in SCM/robots sellers to enhance acceleration and carry propelled usefulness to the supply chain. Robotic system solution/arrangements convey an encouragement for patrons in the dissemination, warehousing, and assembling parts via computerizing cross-process-docking station, lay line-side conveyance, renewal, sorting case-picking, kitting, products to-individual, individual to-products, and larger than average/non-standard stock keeping units transportation. While robots have truly been fabricated and conveyed to play out a particular procedure or capacity, the steady condition of advancement in mechanical improvement will develop here. Robots have largely been removed physical manpower, performing practice and rigorous assignments. Such apprehensions are triggered by means of talented technologies with the aim of automate substantial tasks via robotics, intellectual tasks via artificial Intelligence, cognitive computing, and logistics work, transportation works, consumer repair/service jobs with the purpose of assortment from personal-help centre to big sized container terminals. Robots are not only a fascinating innovation for science ventures. In this review, the acceleration of robot in supply chain has been discussed and an attempt has been made to understand the advantage and application of the robot in the industries.

KARAKTERISTIK BIOLOGI KUDA LAUT (Hippocampus spp) SEBAGAI PENGETAHUAN DASAR BUDIDAYANYA

Many species of marine organisms live in Indonesian waters have a potential for aquaculture (fishes, crustaceans, mollusc, echinoderm, and algae). They are cultured for food resources, the basis for cosmetic and natural medicine, and also as ornamental fish for marine aquarium. Seahorse (Syngnathidae: Hippocampus) is a marine fish which has high ecological and economic value. Fishing pressure of wild seahorse increased significantly when buyers offering an attractive price for the catch. High levels of fishing effort keep the wild stocks of seahorses well below the level that could be supported by natural growth and recruitment. Aquaculture for seahorses is very important to support sustainable production and to maintain the wild population in steady condition. Culture technique for seahorses has been developed in some countries, including Indonesia. However, seahorse aquaculture in Indonesia has not been achieved as expected due to the limited understanding of some biological characteristics. This manuscript deliberates some biological characteristics that useful as basic knowledge for seahorse aquaculture.

How Good Is Your Time Management

Numerous individuals are not generally excellent at the time the board. Subsequently, they are in a steady condition of emergency, and they are not as compelling as they would somehow or another is. When you realize how to deal with your time you oversee what you accomplish. Step through this self-exam test to recognize the parts of time the executives that you need most assistance with. The outcomes will guide towards the particular apparatuses that will assist us with working all the more proficiently. Other individuals are great at time the executives, and therefore, they gain much better ground in less time and exertion. Main focus of the paper is to take the poll and to discover your time the board qualities and shortcomings.

Ultra-Hydrophobic Water

When a drop of a viscous fluid is deposited on a bath of the same fluid that is vibrating, it is shown that it coalesces with this substrate or lifts off when the vibration of the surface is larger than g, leading to a steady condition where a drop can be kept bouncing for any length of time, as shown in figure 1. The phenomena that will occur depends on various parameters, such as drop impact acceleration, liquid surface tension, density, dynamic viscosity, gravity, droplet radius and impact speed, bath vibration frequency and amplitude. The effect of different parameters will conclude to a set of conditions which results in a system, called “ultra-hydrophobic water” which plays important role in chemical micro fluidic applications.

Involvement in the professional environment and its significance for lifelong learning

The analysis of the existing definitions of a phenomenon of the professional environment and various approaches to understanding of her components is presented in article. The attention is paid to consideration of such social and psychological components of the professional environment as professional culture, professional groups and communities. On the basis of the theoretical analysis the author's understanding of functions of the professional environment is offered, also the model of dynamics of an involvement developed by authors on professional environment is provided, its stages are described. The involvement on professional environment is considered as the steady condition of active interaction of the subject with the professional environment which is shown in behavioral activity both in the environment and beyond its limits as the representative of this professional environment. The multidimensionality and relevance of studying of interference of the professional environment and professional education is accented. Arguments for benefit of rapprochement of the educational and professional environment are adduced. In the article the need of studying of interrelation of the involvement in professional environment and the involvement in lifelong education as conditions of successful adaptation and development of the modern professional is proved for the first time.

The Outside Transport Phenomena of the Passive Containment Cooling System

Based on the outside cooling of the Passive Containment Cooling System (PCCS), a simplified containment mathematical model was built and was numerically solved. Air circulation driven by natural forces for a steady condition along with the coupled thermal-hydraulic phenomena was then obtained and analyzed. Variations of humid air temperature and velocity, water film sub-cooling and heat fluxes along the flow direction were discussed and driving forces were compared to obtain the ranked important phenomena of the PCCS outside cooling. The conclusions are significant to reasonably understand the PCCS outside transport phenomena.