Pub Date : 2021-03-31DOI: 10.33493/SCIVIS.21.01.05
Lucy Lalawmpuii, Lalbiakngheti Tlau
Begonia roxburghii is an annual dicot plant of the family Begoniaceae and is found in tropical and subtropical regions of the world. They are monoecious (has both male and female organs) and they are generally self-pollinated. Its parts are variously used in traditional practice for different health benefits. The stem is a nutritious snack, the juice is antihaemorrhoid and antiinfectious agent. It is used for the treatment of bee sting, skin infection, dysentery, diarrhoea, gastric ulcer, oral infection, jaundice and diabetes mellitus. It is chemically rich in flavonoids, alkaloids, glycosides, tannins, saponins, reducing sugars, steroids, resins, carbohydrates and phenols. It is shown to have high antioxidant activity as well as antimicrobial activity. However, little is known about the actual bioactive components and their effects on various health conditions related to its medicinal applications. This plant, therefore, has a potential for medicinal value for a wide array of diseases and clinical conditions, and would be worth systematic chemical and pharmacological characterizations.
{"title":"Begonia roxburghii: A potentially important medicinal plant","authors":"Lucy Lalawmpuii, Lalbiakngheti Tlau","doi":"10.33493/SCIVIS.21.01.05","DOIUrl":"https://doi.org/10.33493/SCIVIS.21.01.05","url":null,"abstract":"Begonia roxburghii is an annual dicot plant of the family Begoniaceae and is found in tropical and subtropical regions of the world. They are monoecious (has both male and female organs) and they are generally self-pollinated. Its parts are variously used in traditional practice for different health benefits. The stem is a nutritious snack, the juice is antihaemorrhoid and antiinfectious agent. It is used for the treatment of bee sting, skin infection, dysentery, diarrhoea, gastric ulcer, oral infection, jaundice and diabetes mellitus. It is chemically rich in flavonoids, alkaloids, glycosides, tannins, saponins, reducing sugars, steroids, resins, carbohydrates and phenols. It is shown to have high antioxidant activity as well as antimicrobial activity. However, little is known about the actual bioactive components and their effects on various health conditions related to its medicinal applications. This plant, therefore, has a potential for medicinal value for a wide array of diseases and clinical conditions, and would be worth systematic chemical and pharmacological characterizations.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72607327","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 : 2021-03-31DOI: 10.33493/SCIVIS.21.01.04
Malsawmdawngzuali Tara
Beetles are a group of insects that form the order Coleoptera, in the superorder Endopterygota. It is estimated that a quarter of all described species in the world belongs to this order. The family Elateridae or click beetles is the ninth-largest family under this order. Wireworms are the larval stage of this family and they play a role in the ecosystem as they are omnivorous and act as pests. There are over 800 species of elaterids recorded from the Indian Subcontinent under eight subfamilies. India is rich in floral and faunal diversity and insect diversity in particular constitute about 6% of all identified insects in the world with a large number being endemic species. But in contrast to its extreme species richness, there is comparatively very little knowledge about this family of beetles when compared to other families. And as such, there is still a lot of potential to study its ecology and diversity. It is also because of this same reason that review of the status of the elaterid family is being done as a prequel to the actual field study.
{"title":"The status of Elateridae (Coleoptera) in India","authors":"Malsawmdawngzuali Tara","doi":"10.33493/SCIVIS.21.01.04","DOIUrl":"https://doi.org/10.33493/SCIVIS.21.01.04","url":null,"abstract":"Beetles are a group of insects that form the order Coleoptera, in the superorder Endopterygota. It is estimated that a quarter of all described species in the world belongs to this order. The family Elateridae or click beetles is the ninth-largest family under this order. Wireworms are the larval stage of this family and they play a role in the ecosystem as they are omnivorous and act as pests. There are over 800 species of elaterids recorded from the Indian Subcontinent under eight subfamilies. India is rich in floral and faunal diversity and insect diversity in particular constitute about 6% of all identified insects in the world with a large number being endemic species. But in contrast to its extreme species richness, there is comparatively very little knowledge about this family of beetles when compared to other families. And as such, there is still a lot of potential to study its ecology and diversity. It is also because of this same reason that review of the status of the elaterid family is being done as a prequel to the actual field study.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87245706","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 : 2020-12-31DOI: 10.33493/scivis.20.04.04
Lalbiakngheti Tlau, Lucy Lalawmpuii
Medicinal plants are the source of therapeutic agents in traditional medicines. The present study investigated Mizo traditional medicinal plants commonly used and available at N. Mualcheng, a village in Mizoram, India. The most important plants in terms of usage and availability as 10 species belonging to 9 families, of which Asteraceae contributes two species (such as Blumea lanceolaria, Acmella sp.), while Fabaceae, Acanthaceae, Costaceae, Orobanchaceae, Proteaceae, Elaeagnaceae, Smilacaceae and Plantaginaceae contribute one species each such as Mimosa pudica, Thunbergia grandiflora, Chamaecostus cuspidatus, Aeginetia indica, Helicia robusta, Elaeagnus caudata, Smilax perfoliata and Plantago asiatica respectively. An important feature of these medicinal plants is that some of them are used for complex diseases including kidney problem, gastric ulcer and diabetes mellitus.
{"title":"Commonly used medicinal plants in N. Mualcheng, Mizoram, India","authors":"Lalbiakngheti Tlau, Lucy Lalawmpuii","doi":"10.33493/scivis.20.04.04","DOIUrl":"https://doi.org/10.33493/scivis.20.04.04","url":null,"abstract":"Medicinal plants are the source of therapeutic agents in traditional medicines. The present study investigated Mizo traditional medicinal plants commonly used and available at N. Mualcheng, a village in Mizoram, India. The most important plants in terms of usage and availability as 10 species belonging to 9 families, of which Asteraceae contributes two species (such as Blumea lanceolaria, Acmella sp.), while Fabaceae, Acanthaceae, Costaceae, Orobanchaceae, Proteaceae, Elaeagnaceae, Smilacaceae and Plantaginaceae contribute one species each such as Mimosa pudica, Thunbergia grandiflora, Chamaecostus cuspidatus, Aeginetia indica, Helicia robusta, Elaeagnus caudata, Smilax perfoliata and Plantago asiatica respectively. An important feature of these medicinal plants is that some of them are used for complex diseases including kidney problem, gastric ulcer and diabetes mellitus.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89442142","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 : 2020-12-31DOI: 10.33493/scivis.20.04.01
A. Ramesh, R. Balasubramanian
The known van der Waals and Berthelot equations of state do-not precisely describe the thermodynamic properties of fluids. To improve its accuracy, the attractive term of the van der Waals equation of state has been modified in six different ways. These generalized equations of state have been employed to determine the spinodal (thermodynamic stability boundary) and the thermodynamic limit of superheat of liquid lead. The equations of state are rewritten in reduced form, from which follows the law of corresponding states. The appropriate modification of the attractive term of the equation of state yielding the value of thermodynamic limit of superheat agreeing with the experimental value for lead has been established. It has been established that liquid lead can be superheated, under rapid heating, up to a temperature 4565 K. That is, liquid lead can be superheated to 2544 K above the normal boiling temperature. At the thermodynamic limit of superheat, the volume of the liquid lead is 4.0095 × 10-5 m3 mol-1. This fact is to be taken into account when liquid lead is subjected to rapid heating.
{"title":"Ability of the generalized van der Waals and Berthelot equations of state to determine the thermodynamic stability of liquid lead","authors":"A. Ramesh, R. Balasubramanian","doi":"10.33493/scivis.20.04.01","DOIUrl":"https://doi.org/10.33493/scivis.20.04.01","url":null,"abstract":"The known van der Waals and Berthelot equations of state do-not precisely describe the thermodynamic properties of fluids. To improve its accuracy, the attractive term of the van der Waals equation of state has been modified in six different ways. These generalized equations of state have been employed to determine the spinodal (thermodynamic stability boundary) and the thermodynamic limit of superheat of liquid lead. The equations of state are rewritten in reduced form, from which follows the law of corresponding states. The appropriate modification of the attractive term of the equation of state yielding the value of thermodynamic limit of superheat agreeing with the experimental value for lead has been established. It has been established that liquid lead can be superheated, under rapid heating, up to a temperature 4565 K. That is, liquid lead can be superheated to 2544 K above the normal boiling temperature. At the thermodynamic limit of superheat, the volume of the liquid lead is 4.0095 × 10-5 m3 mol-1. This fact is to be taken into account when liquid lead is subjected to rapid heating.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78190898","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 : 2020-12-31DOI: 10.33493/scivis.20.04.03
S. Sangthang, Irene Lalhruaimawii, R. Rajesh
COVID-19 pandemic has created huge havoc in public health in India and across the world. One among the small states of India, Mizoram lies between Bangladesh and Myanmar compelling a transmission risk of various infectious diseases across the boundary. The responsibilities of the authority to establish a screening and diagnostic laboratory is crucial to identify the infectious etiological agents, control, prevent morbidity, mortality, and burden of the diseases. We aim to discuss the need for an infectious disease surveillance system, the importance and role of advanced diagnostic and research laboratory in Mizoram, learning from SARS-CoV-2 pandemic.
{"title":"Mitigating infectious diseases in Mizoram - A lesson from COVID-19","authors":"S. Sangthang, Irene Lalhruaimawii, R. Rajesh","doi":"10.33493/scivis.20.04.03","DOIUrl":"https://doi.org/10.33493/scivis.20.04.03","url":null,"abstract":"COVID-19 pandemic has created huge havoc in public health in India and across the world. One among the small states of India, Mizoram lies between Bangladesh and Myanmar compelling a transmission risk of various infectious diseases across the boundary. The responsibilities of the authority to establish a screening and diagnostic laboratory is crucial to identify the infectious etiological agents, control, prevent morbidity, mortality, and burden of the diseases. We aim to discuss the need for an infectious disease surveillance system, the importance and role of advanced diagnostic and research laboratory in Mizoram, learning from SARS-CoV-2 pandemic.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72885498","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 : 2020-12-31DOI: 10.33493/scivis.20.04.02
J. H. Zothantluanga
A protozoan infection called malaria is caused by Plasmodium parasites. In 2018, it infected more than 228 million people and caused 405,000 fatalities. Worryingly, the present antimalarial drugs had developed drug resistance. Furthermore, they are associated with adverse effects and price issues. Amidst the gloomy scenario, drug discovery based on natural products had renewed the hope to overcome the burdens associated with the present antimalarial drugs. Auspiciously, medicinal plants had contributed significantly to the modern pharmacotherapy of malaria. Interestingly, Acacia pennata (L.) Willd. was also documented as a traditional antimalarial agent. However, there is still no scientific evidence regarding its antimalarial activity. Therefore, this article was aimed to study the phytochemical profile of A. pennata and explore their potential activity against malarial parasites. A. pennata contains different classes of bioactive compounds such as alkaloids, flavonoids, phenols, glycosides, terpenoids, phytosterols, and saponins whose antimalarial activities had been reported. Accordingly, the future scopes and challenges regarding the possible antimalarial activity for A. pennata are also discussed. To maximize the chances for finding a new antimalarial chemical entity from A. pennata, a schematic flow chart on the ethnopharmacology based drug discovery approach is also provided. Thus, this literary work may be used by researchers as a referential guide in the search for new antimalarial phytochemicals.
{"title":"Ethnopharmacology and phytochemistry-based review on the antimalarial potential of Acacia pennata (L.) Willd.","authors":"J. H. Zothantluanga","doi":"10.33493/scivis.20.04.02","DOIUrl":"https://doi.org/10.33493/scivis.20.04.02","url":null,"abstract":"A protozoan infection called malaria is caused by Plasmodium parasites. In 2018, it infected more than 228 million people and caused 405,000 fatalities. Worryingly, the present antimalarial drugs had developed drug resistance. Furthermore, they are associated with adverse effects and price issues. Amidst the gloomy scenario, drug discovery based on natural products had renewed the hope to overcome the burdens associated with the present antimalarial drugs. Auspiciously, medicinal plants had contributed significantly to the modern pharmacotherapy of malaria. Interestingly, Acacia pennata (L.) Willd. was also documented as a traditional antimalarial agent. However, there is still no scientific evidence regarding its antimalarial activity. Therefore, this article was aimed to study the phytochemical profile of A. pennata and explore their potential activity against malarial parasites. A. pennata contains different classes of bioactive compounds such as alkaloids, flavonoids, phenols, glycosides, terpenoids, phytosterols, and saponins whose antimalarial activities had been reported. Accordingly, the future scopes and challenges regarding the possible antimalarial activity for A. pennata are also discussed. To maximize the chances for finding a new antimalarial chemical entity from A. pennata, a schematic flow chart on the ethnopharmacology based drug discovery approach is also provided. Thus, this literary work may be used by researchers as a referential guide in the search for new antimalarial phytochemicals.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76602990","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 : 2019-09-30DOI: 10.33493/scivis.19.03.04
K. Thanzami, B. Kakoti, C. Lalremruati
The objective of this study was to investigate the antioxidant and anti-inflammatory activities of the chloroform extract of Combretum punctatum var squamosum by in vitro models. Antioxidant activity was determined by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, reducing power and lipid peroxidation assays. The phenolic and flavonoid contents of the extract were also assessed. The extract at different concentrations showed significant percent inhibition of DPPH and lipid peroxidation and high reducing power when compared with the standard. The extract also showed a significantly high content of phenolics and flavonoids. Anti-inflammatory activity was studied by inhibition of albumin denaturation and human red blood cell (HRBC) membrane stabilization methods. The extract at different concentrations showed significant percent inhibition of albumin denaturation and percent inhibition of haemolysis when compared with the standard. Thus, the result indicates that the chloroform extract exhibited significant potential on anti-inflammatory and antioxidant activities.
{"title":"In vitro antioxidant and anti-inflammatory activities of the chloroform extract of Combretum punctatum var squamosum","authors":"K. Thanzami, B. Kakoti, C. Lalremruati","doi":"10.33493/scivis.19.03.04","DOIUrl":"https://doi.org/10.33493/scivis.19.03.04","url":null,"abstract":"The objective of this study was to investigate the antioxidant and anti-inflammatory activities of the chloroform extract of Combretum punctatum var squamosum by in vitro models. Antioxidant activity was determined by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, reducing power and lipid peroxidation assays. The phenolic and flavonoid contents of the extract were also assessed. The extract at different concentrations showed significant percent inhibition of DPPH and lipid peroxidation and high reducing power when compared with the standard. The extract also showed a significantly high content of phenolics and flavonoids. Anti-inflammatory activity was studied by inhibition of albumin denaturation and human red blood cell (HRBC) membrane stabilization methods. The extract at different concentrations showed significant percent inhibition of albumin denaturation and percent inhibition of haemolysis when compared with the standard. Thus, the result indicates that the chloroform extract exhibited significant potential on anti-inflammatory and antioxidant activities.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83604785","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 : 2019-09-30DOI: 10.33493/scivis.19.03.01
Lalrinkimi, R. K. Lallianthanga
This study provides a first report of the various tree species prevailing in the tropical semi-evergreen forest within Mizoram Science Centre, Berawtlang, Aizawl in relation to their diversity; and also mentions traditional ethnomedicinal and economic uses of the species. A total number of 776 individual trees were assessed within the study site belonging to 74 different species representing 61 genera and 34 families. Among these, 55 tree species have been reported by previous workers to possess indigenous medicinal values. The most abundant tree species at the study site was found to be Callicarpa arborea (hnahkiah) of Verbenaceae comprising 14.30% of the total trees assessed, followed by Anogeissus acuminata (zairum) of Combretaceae with 12.62%, and Schima wallichii (khiang) of Theaceae with 10.56%. A concise list of the species recorded along with their ethnomedicinal and economic uses have been presented here. The prospect of in situ conservation of tree species is briefly highlighted.
{"title":"Documentation of tree species within Mizoram Science Centre, Berawtlang, Aizawl, India, with notes on their ethnomedicinal values","authors":"Lalrinkimi, R. K. Lallianthanga","doi":"10.33493/scivis.19.03.01","DOIUrl":"https://doi.org/10.33493/scivis.19.03.01","url":null,"abstract":"This study provides a first report of the various tree species prevailing in the tropical semi-evergreen forest within Mizoram Science Centre, Berawtlang, Aizawl in relation to their diversity; and also mentions traditional ethnomedicinal and economic uses of the species. A total number of 776 individual trees were assessed within the study site belonging to 74 different species representing 61 genera and 34 families. Among these, 55 tree species have been reported by previous workers to possess indigenous medicinal values. The most abundant tree species at the study site was found to be Callicarpa arborea (hnahkiah) of Verbenaceae comprising 14.30% of the total trees assessed, followed by Anogeissus acuminata (zairum) of Combretaceae with 12.62%, and Schima wallichii (khiang) of Theaceae with 10.56%. A concise list of the species recorded along with their ethnomedicinal and economic uses have been presented here. The prospect of in situ conservation of tree species is briefly highlighted.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86094311","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 : 2019-09-30DOI: 10.33493/scivis.19.03.02
J. Lalrinmawia, K. S. Pau, R. Tiwari
Leakage radiation that transmitted the protected X-ray tube housing was measured and compared with national and international safety standard. To the best of the authors’ knowledge, no tube housing leakage measurement has been done so far in the present study area. The authors considered all the conventional diagnostic X-ray units in Mizoram, India. Ion chamber survey meter was used to measure leakage radiation and it was placed at 5 different positions (left, right, front, back, top) of the X-ray tube. Measurements were done at 1 m focus-to-detector distance by projecting X-ray tube vertically downward with collimator diaphragms closed completely. SPSS statistics for windows, version 17.0 (SPSS, Inc., Chicago, IL, USA) was used to derived mean, standard error of the mean etc. The tube housing leakage exposure rates ranged between 0.03 mRh-1 and 500 mR h-1; among the 5 positions, rate measured in the front direction has the highest mean at 41.61±8.63 mR h-1; whereas the top has the lowest 4.57±1.16 mRh-1. Tube housing radiation level ranged from 0.01 to 58 mR in one hour. Leakage radiation was minimum at the top position of the tube and maximum in the front direction. All the equipment were in compliance with national and international standard norms, the highest leakage radiation level was 50.43% of the safety limit.
测量了x射线管外壳的泄漏辐射，并与国内外安全标准进行了比较。据作者所知，在目前的研究领域还没有进行过管壳泄漏测量。作者考虑了印度米佐拉姆邦所有的传统诊断x射线单位。离子室测量仪用于测量泄漏辐射，放置在x射线管的左、右、前、后、上5个不同位置。通过垂直向下投射x射线管，准直器膜片完全关闭，在1 m聚焦到探测器距离处进行测量。采用SPSS统计软件windows, version 17.0 (SPSS, Inc.， Chicago, IL, USA)进行均值、均值标准误差等计算。管壳泄漏暴露率在0.03 ~ 500 mRh-1之间;5个位置中，正前方的平均值最高，为41.61±8.63 mR h-1;顶部的mRh-1最低(4.57±1.16)。管壳1小时内辐射水平为0.01 ~ 58 mR。泄漏辐射在管顶位置最小，在管前方向最大。所有设备均符合国家和国际标准规范，最高泄漏辐射水平为安全限值的50.43%。
{"title":"Investigation of conventional diagnostic X-ray tube housing leakage radiation using ion chamber survey meter in Mizoram, India","authors":"J. Lalrinmawia, K. S. Pau, R. Tiwari","doi":"10.33493/scivis.19.03.02","DOIUrl":"https://doi.org/10.33493/scivis.19.03.02","url":null,"abstract":"Leakage radiation that transmitted the protected X-ray tube housing was measured and compared with national and international safety standard. To the best of the authors’ knowledge, no tube housing leakage measurement has been done so far in the present study area. The authors considered all the conventional diagnostic X-ray units in Mizoram, India. Ion chamber survey meter was used to measure leakage radiation and it was placed at 5 different positions (left, right, front, back, top) of the X-ray tube. Measurements were done at 1 m focus-to-detector distance by projecting X-ray tube vertically downward with collimator diaphragms closed completely. SPSS statistics for windows, version 17.0 (SPSS, Inc., Chicago, IL, USA) was used to derived mean, standard error of the mean etc. The tube housing leakage exposure rates ranged between 0.03 mRh-1 and 500 mR h-1; among the 5 positions, rate measured in the front direction has the highest mean at 41.61±8.63 mR h-1; whereas the top has the lowest 4.57±1.16 mRh-1. Tube housing radiation level ranged from 0.01 to 58 mR in one hour. Leakage radiation was minimum at the top position of the tube and maximum in the front direction. All the equipment were in compliance with national and international standard norms, the highest leakage radiation level was 50.43% of the safety limit.","PeriodicalId":21329,"journal":{"name":"Science & Technology Vision","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83404828","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}
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