Pub Date : 2021-07-01DOI: 10.22232/stj.2021.09.02.05
Albana L. Chawngthu, G. Rosangkima, V. Liana, Chhungpuii Khawlhring
Ginger (Zingiber officinale Rosc.,Zingiberaceae) is an important crop grown in India known for its therapeutic uses. Wilting caused by bacteria, soft rot and yellow disease caused by fungi are the major diseases affecting Ginger production and its cultivation hampering its growth and development. The current study emphasize on the morphological and molecular identification of fungal pathogens causing soft rot disease in ginger that have become one of the major problem among farmers of Mizoram, India as a result of which resulted in a huge decline in rhizome yield and its production. Nevertheless, due to limited studies of the medicinal plants the causative agents associated with these plants are not available. The objective of this study is to investigate the diversity of fungi that cause soft rot in ginger. Twenty fungi were successfully isolated from four villages of Champha iDistrict, Mizoram. The fungi isolated from the infected rhizome were cultured and identification was carried out using morphological characteristics and molecular analysis of DNA sequence generated from Internal Transcribed Spacer rDNA region. Of the samples collected, F. solani,F. oxysporum, P. myriotylum were the most common causative agents. Much research work has yet to be undertaken explore the diversity of pathogrnic fungi causing soft rot in Mizoram which could be very significant in introducing competent and eco-friendly disease management programme.
{"title":"Isolation and Molecular Characterisation of Ginger (Zingiber officinale. rosc.) Soft Rot Pathogenic Fungi from Champhai District of Mizoram, India","authors":"Albana L. Chawngthu, G. Rosangkima, V. Liana, Chhungpuii Khawlhring","doi":"10.22232/stj.2021.09.02.05","DOIUrl":"https://doi.org/10.22232/stj.2021.09.02.05","url":null,"abstract":"Ginger (Zingiber officinale Rosc.,Zingiberaceae) is an important crop grown in India known for its therapeutic uses. Wilting caused by bacteria, soft rot and yellow disease caused by fungi are the major diseases affecting Ginger production and its cultivation hampering its growth and development. The current study emphasize on the morphological and molecular identification of fungal pathogens causing soft rot disease in ginger that have become one of the major problem among farmers of Mizoram, India as a result of which resulted in a huge decline in rhizome yield and its production. Nevertheless, due to limited studies of the medicinal plants the causative agents associated with these plants are not available. The objective of this study is to investigate the diversity of fungi that cause soft rot in ginger. Twenty fungi were successfully isolated from four villages of Champha iDistrict, Mizoram. The fungi isolated from the infected rhizome were cultured and identification was carried out using morphological characteristics and molecular analysis of DNA sequence generated from Internal Transcribed Spacer rDNA region. Of the samples collected, F. solani,F. oxysporum, P. myriotylum were the most common causative agents. Much research work has yet to be undertaken explore the diversity of pathogrnic fungi causing soft rot in Mizoram which could be very significant in introducing competent and eco-friendly disease management programme.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88144330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-01DOI: 10.22232/stj.2021.09.02.21
L. Hmingliana, Amitabha Nath, C. Rao, Goutam Saha, Khwairakpam Amitab
In this paper, an attempt has been made to interconnect the 32 dam sites within Tlawng Watershed in the state of Mizoram. Computational technique for interlinking of dam sites has been proposed for the purpose. The elevation of dam and the distance between dams are the main parameters considered. We tried to establish a path among dams that would maximize the area coverage, starting from the highest elevation to lowest elevation. An attempt has also been made to incorporate additional dams along this path depending on the distance and elevation. It was found that 11 dam sites could be connected out of 32 dam sites. Interlinking of dams would be highly suitable in hilly region like Mizoram due to dissimilarity of height of different dams (elevation factor) and naturally gravity could be used as a means of water transfer among the interconnect dams.
{"title":"Computational Technique for Interlinking of Dam Sites","authors":"L. Hmingliana, Amitabha Nath, C. Rao, Goutam Saha, Khwairakpam Amitab","doi":"10.22232/stj.2021.09.02.21","DOIUrl":"https://doi.org/10.22232/stj.2021.09.02.21","url":null,"abstract":"In this paper, an attempt has been made to interconnect the 32 dam sites within Tlawng Watershed in the state of Mizoram. Computational technique for interlinking of dam sites has been proposed for the purpose. The elevation of dam and the distance between dams are the main parameters considered. We tried to establish a path among dams that would maximize the area coverage, starting from the highest elevation to lowest elevation. An attempt has also been made to incorporate additional dams along this path depending on the distance and elevation. It was found that 11 dam sites could be connected out of 32 dam sites. Interlinking of dams would be highly suitable in hilly region like Mizoram due to dissimilarity of height of different dams (elevation factor) and naturally gravity could be used as a means of water transfer among the interconnect dams.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83572415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-01DOI: 10.22232/stj.2021.09.02.03
K. K. Tiwari
Soil testing is a key element in assessing the fertility status of soil and hence can be effectively used for assessing plant nutrient requirements and probability of crop production and use of fertilizers. Soils differ in their ability to supply nutrients to plants. The total amount of nutrients in the soil and the amount of their available forms as well as rate of nutrient transformation from unavailable forms to available form and vice versa are the major factors determining fertility status of the soils. To determine the fertility of the soils collected from three villages of Kohima and Phek Districts, both laboratory methods as well as testing kits were used. Various parameters like Nitrogen, Organic carbon, Phosphorus, Potassium along with electric conductivity and pH values is used to investigate the fertility status of soil. Study suggests that both Nitrogen and Phosphorus concentrations range between low to medium whereas organic content is high. Study further suggests that the studied soils are low in their pH. Electrical conductance value is low hence salinity effect is negligible. Potassium content is in medium range. A low to medium NI fertility status have also been interpreted on the basis of N, P and K. Present study also recommends the enhancement of the elemental concentrations through artificial means in the soils of the study area to increase the fertility.
{"title":"Assessment of Soil Fertility and Soil Nutrients of Three Land Use Systems in Jotsoma, Sechu and Rihuba Villages, Nagaland","authors":"K. K. Tiwari","doi":"10.22232/stj.2021.09.02.03","DOIUrl":"https://doi.org/10.22232/stj.2021.09.02.03","url":null,"abstract":"Soil testing is a key element in assessing the fertility status of soil and hence can be effectively used for assessing plant nutrient requirements and probability of crop production and use of fertilizers. Soils differ in their ability to supply nutrients to plants. The total amount of nutrients in the soil and the amount of their available forms as well as rate of nutrient transformation from unavailable forms to available form and vice versa are the major factors determining fertility status of the soils. To determine the fertility of the soils collected from three villages of Kohima and Phek Districts, both laboratory methods as well as testing kits were used. Various parameters like Nitrogen, Organic carbon, Phosphorus, Potassium along with electric conductivity and pH values is used to investigate the fertility status of soil. Study suggests that both Nitrogen and Phosphorus concentrations range between low to medium whereas organic content is high. Study further suggests that the studied soils are low in their pH. Electrical conductance value is low hence salinity effect is negligible. Potassium content is in medium range. A low to medium NI fertility status have also been interpreted on the basis of N, P and K. Present study also recommends the enhancement of the elemental concentrations through artificial means in the soils of the study area to increase the fertility.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82531457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-01DOI: 10.22232/stj.2021.09.02.19
B. Senthil Kumar, Harvey Vanlalpeka, J. Zohmingthanga, N. S. Kumar, L. Hmingliana, Lalrempuia Sailo
The main purpose of this study is to design a machine learning classifier that can accurately classify between gastric cancer (cases) patient and healthy individuals (controls) from epidemiological and environmental factors. The dataset contains missing values which are replaced by median using imputation technique. The basic idea of this work is to reduce the cost function by applying gradient descent to detect the optimal global minima. The proposed logistic regression has utilized 29 features as the input and produces an accuracy of 98.51%. This accuracy is achieved with learning rate 0.000915 and number of iterations 150000, which are devised for training the logistic regression model.
{"title":"Logistic Regression for Gastric Cancer Classification using epidemiological risk factors in Cases and Controls","authors":"B. Senthil Kumar, Harvey Vanlalpeka, J. Zohmingthanga, N. S. Kumar, L. Hmingliana, Lalrempuia Sailo","doi":"10.22232/stj.2021.09.02.19","DOIUrl":"https://doi.org/10.22232/stj.2021.09.02.19","url":null,"abstract":"The main purpose of this study is to design a machine learning classifier that can accurately classify between gastric cancer (cases) patient and healthy individuals (controls) from epidemiological and environmental factors. The dataset contains missing values which are replaced by median using imputation technique. The basic idea of this work is to reduce the cost function by applying gradient descent to detect the optimal global minima. The proposed logistic regression has utilized 29 features as the input and produces an accuracy of 98.51%. This accuracy is achieved with learning rate 0.000915 and number of iterations 150000, which are devised for training the logistic regression model.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"184 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83040011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.22232/stj.2021.09.01.05
P. Baruah, K. Patra
Let L be a lattice with the least element 0, and I be an ideal of L. In this paper, we introduce a generalized zero-divisor graph G (L) I Γ of L with respect to the ideal I. We show that G (L) I Γ is connected with diameter at most three. If G (L) I Γ has a cycle, we show that the girth of G (L) I Γ is at most four. We also investigate the existence of cut vertices of G (L) I Γ Moreover, we examine certain situations when G (L) I Γ is a complete bipartite graph.
设L是最小元素为0的格，I是L的一个理想。本文引入了L关于理想I的广义零因子图G (L) I Γ，并证明了G (L) I Γ与直径最多为3的连通。如果G (L) I Γ有一个循环，我们证明G (L) I Γ的周长最多为4。我们还研究了G (L) I Γ的切顶点的存在性，并研究了G (L) I Γ是完全二部图的某些情况。
{"title":"On a Generalized Zero-Divisor Graph of a Lattice with respect to an Ideal","authors":"P. Baruah, K. Patra","doi":"10.22232/stj.2021.09.01.05","DOIUrl":"https://doi.org/10.22232/stj.2021.09.01.05","url":null,"abstract":"Let L be a lattice with the least element 0, and I be an ideal of L. In this paper, we introduce a generalized zero-divisor graph G (L) I Γ of L with respect to the ideal I. We show that G (L) I Γ is connected with diameter at most three. If G (L) I Γ has a cycle, we show that the girth of G (L) I Γ is at most four. We also investigate the existence of cut vertices of G (L) I Γ Moreover, we examine certain situations when G (L) I Γ is a complete bipartite graph.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87280582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.22232/stj.2021.09.01.04
Biswajit Das, S. M. B. Baruah, Soumik Roy, Uddipan Hazarika
Myelination is one of the most important aspect of membrane remodeling, hence it is very much essential to understand the factors that can aid in remyelination once the myelin layer gets reduced or is lost due to several physiological factors. Studies have shown that the activities taking place within the nervous system itself can aid in remyelination. The current study is based on understanding the role action potential play in aiding in remyelination of the nerve fiber which would not only help in regaining the strength of the signal and also for the faster propagation of the impulse thus addressing several neurological issues arising due to myelin degradation. The idea is to develop an appropriate mathematical model to study the effects of the action potential in remyelination which will be computationally viable and to understand its role in neuronal growth. The findings of this study suggest that variation in the rate at which the membrane potential changes can have a significant impact on neuronal growth and therefore the issues arising out of myelin degradation such as multiple scheloris could be addressed.
{"title":"Neuronal Activity and its Impact on Neuronal Growth","authors":"Biswajit Das, S. M. B. Baruah, Soumik Roy, Uddipan Hazarika","doi":"10.22232/stj.2021.09.01.04","DOIUrl":"https://doi.org/10.22232/stj.2021.09.01.04","url":null,"abstract":"Myelination is one of the most important aspect of membrane remodeling, hence it is very much essential to understand the factors that can aid in remyelination once the myelin layer gets reduced or is lost due to several physiological factors. Studies have shown that the activities taking place within the nervous system itself can aid in remyelination. The current study is based on understanding the role action potential play in aiding in remyelination of the nerve fiber which would not only help in regaining the strength of the signal and also for the faster propagation of the impulse thus addressing several neurological issues arising due to myelin degradation. The idea is to develop an appropriate mathematical model to study the effects of the action potential in remyelination which will be computationally viable and to understand its role in neuronal growth. The findings of this study suggest that variation in the rate at which the membrane potential changes can have a significant impact on neuronal growth and therefore the issues arising out of myelin degradation such as multiple scheloris could be addressed.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81965973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.22232/stj.2021.09.01.13
B. Ramngaihawma, Shivam Kumar, V. Bharti, Malsawm Tluanga, J. Blick
In the present study, physico-chemical characteristics of potable water from the selected area in the central part of Mamit district, Mizoram were analysed to obtain the quality level for domestic uses. During the non-monsoon period, the residents in the selected area mainly depend on perennial spring (Tuikhur), hand pump, and rainwater harvesting without any treatment for drinking and other domestic purposes. A total of 17 potable water samples were collected from 6 different stations in the study area. The water samples were analysed for their physico-chemical characteristics, viz. pH, Turbidity, EC, Total Dissolve Solids, Total Hardness, Total Alkalinity, chloride, fluoride, nitrate, and sulphate. On comparing the results against water quality standards and standard values recommended by the World Health Organization (WHO) and Bureau of Indian Standard (BIS), it is found that most of the water samples are well within the permissible limit and suitable for drinking and domestic purposes. Analysis of heavy metals such as Iron, Zinc, Cadmium, Magnesium, Copper, Lead, Potassium, Chromium, Manganese, Calcium, Arsenic, and Sodium was also carried out by using Microwave Plasma Atomic Emission Spectroscopy (MPAES). The concentrations of heavy metals were also found within the acceptable limits as per WHO and BIS guidelines.
{"title":"Physico-Chemical Analysis of Selected Potable Water in Parts of Mamit District, Mizoram","authors":"B. Ramngaihawma, Shivam Kumar, V. Bharti, Malsawm Tluanga, J. Blick","doi":"10.22232/stj.2021.09.01.13","DOIUrl":"https://doi.org/10.22232/stj.2021.09.01.13","url":null,"abstract":"In the present study, physico-chemical characteristics of potable water from the selected area in the central part of Mamit district, Mizoram were analysed to obtain the quality level for domestic uses. During the non-monsoon period, the residents in the selected area mainly depend on perennial spring (Tuikhur), hand pump, and rainwater harvesting without any treatment for drinking and other domestic purposes. A total of 17 potable water samples were collected from 6 different stations in the study area. The water samples were analysed for their physico-chemical characteristics, viz. pH, Turbidity, EC, Total Dissolve Solids, Total Hardness, Total Alkalinity, chloride, fluoride, nitrate, and sulphate. On comparing the results against water quality standards and standard values recommended by the World Health Organization (WHO) and Bureau of Indian Standard (BIS), it is found that most of the water samples are well within the permissible limit and suitable for drinking and domestic purposes. Analysis of heavy metals such as Iron, Zinc, Cadmium, Magnesium, Copper, Lead, Potassium, Chromium, Manganese, Calcium, Arsenic, and Sodium was also carried out by using Microwave Plasma Atomic Emission Spectroscopy (MPAES). The concentrations of heavy metals were also found within the acceptable limits as per WHO and BIS guidelines.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87100199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.22232/stj.2021.09.01.06
Lal awmpuia, H. Lalruatsanga
A survey of plant species inhabiting oil palm trees was conducted in Zawlpui area of Serchhip district, Mizoram. The study area is a tropical potent agriculture zone, wherein small-scale business of Elaeis guineensis plantation is carried out by several farmers mainly within the gentle sloppy terrain. Oil palm with a rough bark harbors immense inhabitation by a variety plants, that rooted mostly on the debris at leaf base. Species diversity on the plant stem supposedly encourage insects and termites to establish herewith, thus causing harming to the tree. The sample stands within 400 m–800 m altitude were picked randomly. A total of 50 palm tree were accounted and all associated plants on the stem above 30 cm from the ground are all recorded. Species that cannot be identified on the site were pressed and observed at Botany Research lab, Pachhunga University College. The survey documented 38 vascular plant species which include 4 epiphytes and 1 non-vascular species of lichen, 1 bryophyte and 4 fungal species at that time. Invasive Peperomia pellucida and epiphytic pteridophytes Nephrolepis biserrata was found in most of the stand sample; however, Peperomia population decreases with the increasing elevation. Dynamics of inhabitant species diversity also correlate to location of tree. The study also established that diversity of inhabiting species was comparatively high on parts of the stem facing sunlight.
{"title":"Enumeration of Plant Species Inhabiting Oil Palm Trees (Elaeis-guineensis) at Zawlpui Plantation Site, Serchhip District, Mizoram","authors":"Lal awmpuia, H. Lalruatsanga","doi":"10.22232/stj.2021.09.01.06","DOIUrl":"https://doi.org/10.22232/stj.2021.09.01.06","url":null,"abstract":"A survey of plant species inhabiting oil palm trees was conducted in Zawlpui area of Serchhip district, Mizoram. The study area is a tropical potent agriculture zone, wherein small-scale business of Elaeis guineensis plantation is carried out by several farmers mainly within the gentle sloppy terrain. Oil palm with a rough bark harbors immense inhabitation by a variety plants, that rooted mostly on the debris at leaf base. Species diversity on the plant stem supposedly encourage insects and termites to establish herewith, thus causing harming to the tree. The sample stands within 400 m–800 m altitude were picked randomly. A total of 50 palm tree were accounted and all associated plants on the stem above 30 cm from the ground are all recorded. Species that cannot be identified on the site were pressed and observed at Botany Research lab, Pachhunga University College. The survey documented 38 vascular plant species which include 4 epiphytes and 1 non-vascular species of lichen, 1 bryophyte and 4 fungal species at that time. Invasive Peperomia pellucida and epiphytic pteridophytes Nephrolepis biserrata was found in most of the stand sample; however, Peperomia population decreases with the increasing elevation. Dynamics of inhabitant species diversity also correlate to location of tree. The study also established that diversity of inhabiting species was comparatively high on parts of the stem facing sunlight.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84924058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.22232/stj.2021.09.01.16
Lal lawmzuala, Z. Pachuau, Lalrinthara Pachuau
In this paper we present the study of how Radio Frequency (RF) Radiations emitted by mobile base stations effects human health on thirteen different non-specific health symptoms residing in the vicinity of base stations. The survey was conducted on people living within and beyond 50m from mobile base station in Lunglei district, Mizoram for the first time since mobile tower was erected in 2008. Power density from mobile towers have also been measured within and outside 50m from the station for GSM900 and GSM1800 in the same locality. The measured average power densities have been compared with standard limits given by various scientific bodies like International Commission on Non-Ionizing Radiation Protection (ICNIRP,1998), Bioinitiative Report (2012), Salzburg Resolution (2000) and current Indian National Standards. It has been found that the measured power density were well below the recommended limit given by ICNIRP,1998 and the Indian standard (2013) in all the selected sites of study, whereas in four localities the average power density was found to be higher than the recommended limits of Bioinitiative Report,2012 and Salzburg Resolution. Questionnaire survey was also conducted on different health symptoms faced by the inhabitants close to the base stations. The results were statistically analysed based on exposure and sex. From the correlation studies, it has been found that more is the power density more is the number of significant health complaints and, also females were found to be more effected than males.
{"title":"Analysis of RF Radiation and its Health Effects in Lunglei District of Mizoram","authors":"Lal lawmzuala, Z. Pachuau, Lalrinthara Pachuau","doi":"10.22232/stj.2021.09.01.16","DOIUrl":"https://doi.org/10.22232/stj.2021.09.01.16","url":null,"abstract":"In this paper we present the study of how Radio Frequency (RF) Radiations emitted by mobile base stations effects human health on thirteen different non-specific health symptoms residing in the vicinity of base stations. The survey was conducted on people living within and beyond 50m from mobile base station in Lunglei district, Mizoram for the first time since mobile tower was erected in 2008. Power density from mobile towers have also been measured within and outside 50m from the station for GSM900 and GSM1800 in the same locality. The measured average power densities have been compared with standard limits given by various scientific bodies like International Commission on Non-Ionizing Radiation Protection (ICNIRP,1998), Bioinitiative Report (2012), Salzburg Resolution (2000) and current Indian National Standards. It has been found that the measured power density were well below the recommended limit given by ICNIRP,1998 and the Indian standard (2013) in all the selected sites of study, whereas in four localities the average power density was found to be higher than the recommended limits of Bioinitiative Report,2012 and Salzburg Resolution. Questionnaire survey was also conducted on different health symptoms faced by the inhabitants close to the base stations. The results were statistically analysed based on exposure and sex. From the correlation studies, it has been found that more is the power density more is the number of significant health complaints and, also females were found to be more effected than males.","PeriodicalId":22107,"journal":{"name":"Silpakorn University Science and Technology Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88001384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.22232/stj.2021.09.01.8
Jimmy Lalnunmawia, Malsawmtluangkima Hauhnar, Orizen M. S. Dawngliana, Shivam Kumar, C. Zoramthara
Mizoram is part of Surma basin which later evolved into the present state of geological terrain due to Indo- Myanmar tectonic collision during the Oligocene period. The present work deals with geochemical characteristics of Barail sandstones exposed in Champhai area of eastern region in Mizoram. The major/minor oxides, trace elements and rare earth elements data are used to infer the geological history and evolution of the sandstone in the study area of Champhai. The petrographic study shows the presence of various detrital grains like quartz, lithic fragments, feldspar, chertz, mica, etc., which are cemented by siliceous and ferruginous materials. Geochemically, the sandstones indicate high wt% of SiO2, Al2O3 and MgO compared to Upper Continental Crust (UCC) while rest of the major oxides indicate low concentrations. The geochemical classification indicated the sandstones as litharenite and wacke. The chondrite normalised REE pattern shows the enrichment of HREE and depletion of LREE with negative Eu anomaly. The value of Eu/Eu*, La/Lu, La/Co, Th/Sc, Th/Co, Cr/Th and high ratio of LREE/HREE of Barail sandstone suggest felsic source rock. The analysis of paleoweathering history indicated moderate to intensive weathering in the provenance. Various tectonic discriminant function diagrams suggested Active Continental Margin settings.
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