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Climate changes indulge the spread of pests outside their active range by increasing, decreasing, or shifting appropriate climatic conditions and niche of a particular species. Modeling the future potential distribution of pests using MaxEnt under different climate change scenarios is an effective method for prevention and management protocol. This study was conducted to predict the potential distribution of Schistocerca gregaria in future for better management plans based on two socio-economic pathways (SSPs) for 2050 and 2070. To evaluate the predictive performance of the model, the area under the receiver operating characteristic curve (AUC) was used. We used 226 occurrence records and 9 bioclimatic variables to simulate the current and future distributions of S. gregaria. The precision of the MaxEnt model was highly significant, with mean AUC value ranging from 0.929 to 0.940 for all of the evaluated models. The jackknife test showed that Bio 11 and Bio18 contributed 51.4% and 17.3% to the MaxEnt model. A total of 2,557,856 km2 (1.69%) area were recognized as high potential habitats of S. gregaria. However, in 2050 and 2070 high-potential areas would decrease for both of the SSP scenarios.

LPG (Liquefied petroleum gas) is a form of natural gas which has been liquefied under extreme pressure and then contained in a metal cylinder. It is very sensitive to fire and can cause a great disaster if it's exposed to any fire source without precaution. LPG is more available than any other natural gas so most people choose LPG for their needs like cooking and other needs. So the event of gas leakage or blast occurring by leaked gas is frequently seen and heard. In this paper, a device has been introduced to prevent any possible accident from happening. It is called Smart Gas and Fire detector. The device can detect any spillage of gas and fire very quickly and send a response via gsm tool directly to the user very fast and a buzzer is set up to alert. The device also has another feature with an exhaust fan which will be activated in case of gas leakage and fire detected, to reduce the density of gas by pushing the air outside. The device is designed to detect gas and fire as quickly as possible. Its performance is the same in case of closed and open both types of room.

The objective of this paper is to present and analyze the results of simulated steam generator tube rupture (SGTR) accident in VVER-1200 Nuclear Reactor in PCTRAN. In simulating the accident, 100% of one full tube rupture has been considered. The simulation result shows that pressure and temperature changes slightly but it doesn’t effect on reactor power and neutron flux because the VVER-1200 nuclear power reactor has several safety features which undertake the situation and as a result, reactor trip did not happen. The data obtained from the simulation are satisfactorily consistent with PSAR (Preliminary Safety Assessment Report) data regarding SGTR accident. These findings are expected to provide useful information in understanding and evaluating plants capability to mitigate the consequence of SGTR accident.