Study on Atmospheric Corrosion for Two Different Marine Environments in India

( Jayanta Kumar Saha ) 한국부식방식학회(구 한국부식학회) 2007 Corrosion Science and Technology Vol.6 No.3

Assessment of the Effect of Dimethyl Ether (DME) Combustion on Lettuce and Chinese Cabbage Growth in Greenhouse

Jayanta Kumar Basak,Waqas Qasim,강호민,Frank Gyan Okyere,이용진,Elanchezhian Arulmozhi,박지훈,조원준,김현태 (사) 한국생물환경조절학회 2019 시설원예‧식물공장 Vol.28 No.4

The experiment was conducted to determine the performance of DME combustion gas when used as a fuel for DME burner for raising temperature and CO2 concentration in greenhouse and also to examine its effects on chlorophyll content, and fresh and dry weight of lettuce and Chinese cabbage. DME-1 and DME-2 treatments consisted of average DME flow quantity in duct were 17.4 m3 min-1 and 10.2 m3 min-1 respectively to greenhouse-1 and greenhouse2 and no DME gas was supplied to greenhouse-3 which was left as control (DME-3). DME supply times were 0.5 hr day-1, 1 hr day-1, 1:30 hrs day-1 and 2 hrs day-1 on week 1, 2, 3, and 4 respectively. Chlorophyll content and fresh and dry weight of lettuce and Chinese cabbage were measured for each treatment and analyzed through analysis of variance with a significance level of P<0.05. The result of the study showed that CO2 concentration increased up to 265% and 174% and the level of temperature elevated 4.8oC and 3.1oC in greenhouse-1 and 2, respectively as compared to greenhouse-3 due to application of DME combustion gas. Although, the same crop management practices were provided in greenhouse-1, 2 and 3 at a same rate, the highest change (p<0.05) of chlorophyll content, fresh weight and dry weight were found from the DME-1 treatment, followed by DME-2. As a result, DME combustion gas that raised the level of temperature and CO2 concentration in the greenhouse-1 and greenhouse-2, might have an effect on growth of lettuce and Chinese cabbage. At end of experiment, the highest fresh and dry weight of lettuce and Chinese cabbage were measured in greenhouse-1 and followed by greenhouse-2. Similarly chlorophyll content of greenhouse-1 and greenhouse-2 were more compared to greenhouse-3. In general, DME was not producing any harmful gas during its combustion period, therefore it can be used as an alternative to conventional fuel such as diesel and liquefied petroleum gas (LPG) for both heating and CO2 supply in winter season. Moreover, endorsed quantify of DME combustion gas for a specified crop can be applied to greenhouse to improve the plant growth and enhance yield. Additional

Assessment of Changing Pattern of Temperature and CO2 by Using DME Combustion Gas for Enhanced Growth of Pepper Plant in Greenhouse

( Jayanta Kumar Basak ),( Qasim Waqas ),( Fawad Khan ),( Frank Gyan Okyere ),( Jihoon Park ),( Elanchezhian Arulmozhi ),( Yong Jin Lee ),( Hyeon Tae Kim ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.2

This experiment was conducted to assess the changing pattern of temperature and carbon dioxide concentration by using Dimethyl Ether (DME) combustion gas as a fuel for DME burner for observing those effects on height of hot pepper (Capsicum annuum) in winter season. To achieve the objectives of the study, we assayed three treatments for the three control greenhouses. DME-1 and DME-2 treatments consisted of average DME flow quantity in duct were 17.4 ㎥/min and 10.2 ㎥/min respectively to greenhouse-1 and greenhouse-2 and no DME gas was supplied to greenhouse-3 which was left as control (DME-3). We measured the daily temperature and CO₂ concentrations using sensors located in three different places with fixed three distinct heights in each greenhouse. In most ways, and perhaps in virtually all, we provided all crop management practices to each greenhouse at a same time in a fixed rate. Twenty plants from each greenhouse were collected randomly after 15 days of germination and were used to measure root and shoot length for eight weeks for each treatment. The study found that the concentration of CO₂ increased up to 290% and 205% and temperature raised up to 5.5°C and 3.5°C treated with DME at 17.4 ㎥/min and 10.2 ㎥/min respectively compared to control condition. There was a significant relationship observed between the rate of DME application and growth of pepper plant. Mean (±sd) plants height (mm) at vegetative phase of pepper plant after 8 week were 272±3.83, 264±5.19 and 255±7.64 for DME-1, DME-2 and DME-3 respectively. A comparison of relative growth rates among the treatments indicated more rapid relative growth rate at vegetative phase of pepper plant implying better yield.

Assessment of the Influence of Environmental Variables on Body Temperature of Pig Using ANN and MLR Models

( Jayanta Kumar Basak ),( Elanchezhian Arulmozhi ),( Fawad Khan ),( Frank Gyan Okyere ),( Jihoon Park ),( Dougheon Lee ),( Hyeon Tae Kim ) 한국농업기계학회 2019 한국농업기계학회 학술발표논문집 Vol.24 No.2

The experiment was conducted to find out the most influential factors affecting pig’s body temperature (PBT). For this purpose, eight environmental parameters and three growth related factors were considered as variables. Two independent experiments were carried out over a period of 92 days in 2017 and 2018. Environmental parameters inside and outside the pig’s barn were recorded using livestock environment management systems (LEMS) and weather sensors, respectively. Infrared sensors were used for measuring PBT. Among these factors, seven environmental parameters, including temperature, CO2, temperature-humidity index inside and outside the pig’s barn and relative humidity inside the barn were taken as input variables for artificial neural networks (ANN) and multiple linear regression (MLR) models due to their good correlation (r≥0.5) with PBT. The performance of the models in predicting pig’s body temperature was determined using statistical quality parameters, including coefficient of determination (R2), root mean square error (RMSE) and mean absolute error (MAE). Result of the study showed that temperature-humidity index is the most and relative humidity inside the room is the least in fluential factors affecting PBT in MLR/ANN models.

Anthelmintic activity of Clerodendrum viscosum

Jayanta Kumar Das,S. Choudhury,S. Adhikary,B. Das,S. Samanta,S. C. Mandal,S. P. Dey 경희대학교 융합한의과학연구소 2011 Oriental Pharmacy and Experimental Medicine Vol.11 No.2

The juice of the fresh leaves of Clerodendrum viscosum is widely used in the treatment of helminthiasis in folklore medicine. In this present study we have investigated the folklore claim methodically and scientifically. The ethanolic and aqueous extracts of leaves and roots of the plant are tested against Pheretima posthuma & Ascardia galli to ascertain their anthelmintic potential. All the extracts showed significant anthelmintic activity in dose dependent manner; the ethanolic extract of root at a dose of 200 mg/ml exhibited better anthelmintic activity than the reference drug,Piperazine citrate (10 mg/ml) against both type of worms.

Spatio-temporal trend and change point detection of winter temperature of North Bengal, India

Jayanta Das,Tapash Mandal,Piu Saha 대한공간정보학회 2019 Spatial Information Research Vol.27 No.4

The trend of temperature and homogeneity are the most significant issue for climate change allied research. This research aims to identify the long-term trend and change point detection of winter maximum (tmax), minimum (tmin) and average (tmean) temperature of six meteorological stations of North Bengal, India using 102 years’ time series data (1915–2016). To detect the monotonic trend and the rate of change, non-parametric Mann–Kendall (MK) test and Sen’s slope estimator were used. Homogeneity of winter temperature was studied using Buishand’s range test (B test) and Pettit’s test (P test). From the results, it was observed that most of the stations were showed significant (P\0.05) warming trend in winter season. The rate of increasing was highest at station English Bazar in the month of December. On the other hand, significant changed of winter tmax and tmean occurred in around 1959 and 1952 respectively, while for tmin it was quite late, occurred in the year 1988. The populations of North Bengal who are dependent on temperature- related primary economic activities are getting benefitted from this study. In addition, these analyses will be helpful for policymakers and scientist to focus on microlevel planning and sustainable Rabi crops management in this region.

Monitoring changing course of the river Ganga and land-use dynamicity in Manikchak Diara of Malda district, West Bengal, India, using geospatial tools

Jayanta Mondal,Sujit Mandal 대한공간정보학회 2018 Spatial Information Research Vol.26 No.6

Dynamicity of the river Ganga introduces significant changes in the land-use character of active alluvial plain of West Bengal, India. The dynamicity of the river Ganga is caused due to continuous sedimentation and formation of char land which frequently changes the flow direction and flow velocity of running water as well as causes the shifting of the bank line due to active bank erosion processes in the upstream of Farakka Barrage. Bank line shifting was estimated with the help of 25 transects since 1973–2011. A large-scale land erosion (38.6 sq. km area) occurred due to the bank line shifting which observed in Godai, Kesharpur, Rambari, Hiranandapur, Mathurapur, Manikchak, Samastipur, Dakshin Chandipur, and Gopalpur mouzas of Manikchak block, whereas deposition (2.4 sq. km area) was found in Chandipur Tofi Narayanpur and Govindapur mouzas. Such erosion and deposition invited a lot of changes in land-use statistics. Land-use–land-cover maps were prepared using supervised image classification techniques and validated through kappa statistics (kappa coefficient 0.803 and 0.892 for the year 1994 and 2016, respectively). Land-use change detection technique was used to identify the transformation of land-use character from one feature to another. This study revealed that a notable area of settlement (5.07 sq. km) and vegetation cover (6.84 sq. km) was converted into water body as a result of bank erosion. Loss of agricultural land and homestead led to the loss of livelihood and introduced internal migration. The observed pattern of river dynamics and the consequent land-use change in the recent decades have shown newer environmental challenges to the coping capabilities of the rural inhabitants.

Relationships between Ambient Environment and Thermal Status of Pig Body in Livestock Barn

( Jayanta Kumar Basak ),( Jihoon Park ),( Elanchezhian Arulmozhi ),( Fawad Khan ),( Frank Gyan Okyere ),( Yong Jin Lee ),( Hyeon Tae Kim ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.2

There is a growing interest in measuring body surface temperature of animal and ambient environment in order to determine thermal comfort zone of livestock barn. The aim of the study was to observe the changing pattern of humidity, CO₂ concentration and temperature in pig barn related to body temperature change. Six pigs of one month age were tested over a period of 60 days at the Gyeongsang National University. Infrared Sensor (IR), a non-invasive method, has been used to measure body surface temperature in different body sides: left side (LS), right side (RS), forehead (FH) and back side (BS). Inside ambient environmental parameters like humidity, CO₂ concentration and temperature was measured by using LEMS and PT100Ώ temperature sensors during the experiment. The study found strong correlation between temperature-humidity index (THI) and body surface temperature (0.89). Experimental results showed that there were no significant difference (p<0.01) of temperature in different body areas of the pigs. However, CO₂ concentration were more than two times higher in inside than outside that might effect the body surface temperature of pig. The collected data on different sections of pig body may be further used to identify the symptoms of diseases, when it exceeds the normal temperature range as well as changing behavior in different life stages such as eating, moving, and pregnancy stage etc.

Assessment of Heating efficiency of Boiler machine and Dimethyl ether burner for growing crops in greenhouse

( Jayanta Kumar Basak ),( Fawad Khan ),( Elanchezhian Arulmozhi ),( Deog Hyun Lee ),( Byeong Eun Moon ),( Hyeon Tae Kim ) 한국농업기계학회 2020 한국농업기계학회 학술발표논문집 Vol.25 No.2

The experiment was conducted to determine the heating efficiency of boiler machine and Dimethyl ether (DME) burner in three greenhouses. The present study assessed the changing pattern of inside ambient environmental temperature, humidity and CO2 concentration by using the two types of heating systems. Three identical greenhouses (width 12 m, length 20 m, height 4 m) were used to conduct the experiment. In greenhouse-1 (GH-1) and greenhouse-2 (GH-2), heating system was operated by DME burner and boiler machine respectively and no heating system was provided to greenhouse-3 (GH-3) which was left as control. In the current study, DME gas was used as a fuel for DME burner and kerosene oil for boiler machine. Carbon dioxide, temperature and humidity was recorded using Lutron MCH-383SD electrochemical sensors. The sensors were set at three different heights of greenhouses. Data were checked at 10-min intervals and recorded data were averaged for further analysis and interpretation. The both systems were operated in 30 minutes after every one hour interval within a fixed rate from 10:30 to 17.30 in a day. Fuel cost was also estimated for cost benefit analysis of the two systems. The finding of the study showed that heat generated from the both system was almost same. Average 15 days data on temperature during the experimental period showed that temperature was increased up to 10.7% and 12.4% treated with DME burner and boiler machine, respectively compared to control condition. However, the fuel cost for operating boiler machine was more than 20% compared to DME burner. Even though the current study found that DME burner was not only provide heating facility in greenhouse but also provide sufficient CO2 without any high concentration of toxic gases. Moreover, this study creates a scope for further experiment using DME gas burner in green houses to measure growth performance of different crops.

Monitoring Predictive and Informative Indicators of Body Surface Temperature of Pig in the Context of Thermal Comfort Zone of Livestock Barn Using Infrared Sensor

( Jayanta Kumar Basak ),( Elanchezhian Arulmozhi ),( Ji-hoon Park ),( Fawad Khan ),( Frank Gyan Okyere ),( Yong-jin Lee ),( Deok-hyeon Lee ),( Hyeon-tae Kim ) 한국농업기계학회 2019 한국농업기계학회 학술발표논문집 Vol.24 No.1

Temperature and relative humidity are the most pivotal parameters for life, and governs maximum factors of whole-animal performance and fitness. The aim of this experimental work was to examine and to prove the correlation between body surface temperature of pig and ambient environment in order to determine thermal comfort zone of livestock barn. The study evaluated the performance of four different models, including temperature model (T model), relative humidity model (H model), temperature-humidity model (TH model), and temperature-humidity index model (THI model) for monitoring and predicting body surface temperature. In total, six 10-week-old Hampshire species pigs with an initial body weight of 30.3±0.85 kg were obtained over a period of 92 days during two years (2017-2018) to develop and evaluate the four models. For this experiment, skin surface temperature was measured using infrared sensor (IR) from a fixed distance (20 cm) and position perpendicular to pig’ body at different locations: left side (LS), right side (RS), forehead (FH) and back side (BS). Livestock environment management systems (LEMS) data reception confirmation were installed to collect data of temperature and humidity, carbon dioxide, smoke and wind speed. The mean environmental temperature and humidity in livestock barn during the experimental period 2017 were 23.11±3.4°C and 64.33± 7.2% respectively and 21.95±3.3°C and 64.31±10.24% respectively in 2018. With respect to the regions analyzed by IR sensor, there were no significant difference (p>0.05) of temperatures in different body areas of the pigs. It was found that THI model was selected as the best model to make more accurate prediction in both training (R²=0.72, RMSE=0.80 ,RSE=0.26 and MAPE=2.08) and validation (R²=0.74, RMSE=1.10, RSE=0.40 and MAPE=2.80) stages. The applicability of the suggested equations to other animals, changing management conditions on different environmental condition should be tested.