Journal of Hunan Institute of Science and Technology最新文献_第2页

Macrofungal Diversity of Brahakshetra Community Forest, Ghorahi, Dang, Nepal 尼泊尔戈拉希布拉哈舍特拉群落森林的大型真菌多样性

Journal of Hunan Institute of Science and Technology Pub Date : 2022-12-31 DOI: 10.3126/jist.v27i2.51359

Sadikshya Thapa, Shashi Shrestha, S. Jha

{"title":"Macrofungal Diversity of Brahakshetra Community Forest, Ghorahi, Dang, Nepal","authors":"Sadikshya Thapa, Shashi Shrestha, S. Jha","doi":"10.3126/jist.v27i2.51359","DOIUrl":"https://doi.org/10.3126/jist.v27i2.51359","url":null,"abstract":"Fungi are a diverse group of organisms ranging from microscopic to macroscopic mushrooms. Being a major group of decomposers, they are essential for the survival of other organisms in the ecosystem and important for the degradation of organic matter. The main aim of this study was to study the macrofungal diversity of Brahakshetra Community Forest, Ghorahi, Dang. The forest is mainly dominated by Shorea robusta and other associated species. The study was made from June to September 2020. The sampling was done by using a 10×10m quadrate in a line transect and each plot was divided into 5×5m quadrats and samples were collected during the rainy season from different habitats of the forest. Mushrooms were photographed in their natural habitat and preserved in dry and liquid preservation. The specimens were identified by examining their macroscopic and microscopic features, and also by using references from standard literature and websites. In the study, a total of 66 species were recorded under 30 genera belonging to 21 families, and 8 orders. Among them, 65 belong to basidiomycetes and 1 belongs to Ascomycetes. Agaricales was found as the largest order followed by Russulales and Boletales. The diversity indices, the Shannon Weiner index and Simpson diversity index were found to be 3.59 and 0.93 respectively. The result of this study concludes that the Brahakshetra Community Forest was rich in macrofungal diversity, especially ectomycorrhizal. There were positive trends between species richness of macrofungi and environmental variables, i.e., tree canopy, soil pH, soil moisture, and leaf litter which means species increased with increasing these environmental variables.","PeriodicalId":16072,"journal":{"name":"Journal of Hunan Institute of Science and Technology","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80096342","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}

引用次数: 0

Tree Species Diversity and Regenerating Potential along Disturbance Gradient in Chandragiri Hill, Kathmandu, Central Nepal 尼泊尔中部加德满都Chandragiri山树种多样性及其沿扰动梯度的更新潜力

Journal of Hunan Institute of Science and Technology Pub Date : 2022-12-31 DOI: 10.3126/jist.v27i2.49614

R. S. Dani, C. Baniya

{"title":"Tree Species Diversity and Regenerating Potential along Disturbance Gradient in Chandragiri Hill, Kathmandu, Central Nepal","authors":"R. S. Dani, C. Baniya","doi":"10.3126/jist.v27i2.49614","DOIUrl":"https://doi.org/10.3126/jist.v27i2.49614","url":null,"abstract":"Tress species regeneration is greatly influenced by climatic, topographic, and anthropogenic activities. Present study was designed to examine the tree species diversity and their regeneration patterns along the anthropogenic disturbance gradient in the temperate forest of Chandragiri Hill, Central Nepal. Data were obtained from 90 sample plots ranging between 1560 to 2290 m asl after randomly sampling along three disturbance classes classified based on canopy coverage and degrees of disturbance activities in 2021. Circumference at breast height (1.37 m height above the ground) of each tree individual was measured and classified into tree, sapling, and seedling. A total of 47 tree species belonging to 42 genera and 26 families were obtained by this study. The highest species richness for seedlings and saplings was obtained in severely disturbed areas and tree species richness in the moderately disturbed area. The tree stands density varied between 350 to 1017 individuals ha-1 with the total basal area between 12.7 to 72.78 m2 ha-1 with the least value in a highly disturbed area and highest in the least disturbed area. The seedling and sapling densities were found increased from lower to more disturbed forests indicating that the forest fragmentation negatively affected the regeneration. The highest values of the Shannon Weiner index, Pielou Index, and the lowest value of the Simpson index were observed at moderate disturbance areas. About 36 to 60% of species were found regenerating in the less disturbed and moderately disturbed forests and no regeneration in severely disturbed areas. Elevation, canopy cover, landslide, and slopes were found to be the most influential variables in forest regeneration as significantly represented by CCA1. The present study has found a moderate level of disturbance to become beneficial for better regeneration of tree species. So, the reduction of excessive disturbance from local people would be a better option for the adequate regeneration of tree species.","PeriodicalId":16072,"journal":{"name":"Journal of Hunan Institute of Science and Technology","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89920462","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}

引用次数: 0

Structural Parameter of a Merging Compact Dwarf Galaxy CG 0315 正在合并的致密矮星系cg0315的结构参数

Journal of Hunan Institute of Science and Technology Pub Date : 2022-12-31 DOI: 10.3126/jist.v27i2.35312

D. Chhatkuli, S. Paudel, Amrit Sedhain, B. Aryal

{"title":"Structural Parameter of a Merging Compact Dwarf Galaxy CG 0315","authors":"D. Chhatkuli, S. Paudel, Amrit Sedhain, B. Aryal","doi":"10.3126/jist.v27i2.35312","DOIUrl":"https://doi.org/10.3126/jist.v27i2.35312","url":null,"abstract":"Structural parameters like size, Sersic index, total luminosity and ellipticity are important tools to study galaxy formation and evolution. This work studies a compact dwarf galaxy CG 0325, originated from a merger, and performs a detailed analysis of morphological parameters. The galaxy size is derived by using two different methods, i.e., parametric and non-parametric. The parametric uses the Sersic modeling, but it is found that the observed light profile of CG 0325 cannot be modeled with a simple Sersic function. This is, however, common in merging feature galaxies. Therefore, for further analysis, the half-light radius derived from the non-parametric method can be used as the size of the galaxy. CG 0315 is far more compact than a typical galaxy. We measured its effective radius of 4.05 arcseconds and half-light radius of 2.60 arcseconds that corresponds to a physical value of 221 parsec. Its ratio between the minor and major axis is 0.82, and the position angle is 179 degrees to the North. The star formation rate of the galaxy is 0.051Mʘ year-1. We conclude from these observational data that CG 0315 will continue to be a compact dwarf galaxy when star formation stops and transforms into a well-known compact elliptical galaxy. Therefore, CG 0315 might be a progenitor of an elliptical galaxy.","PeriodicalId":16072,"journal":{"name":"Journal of Hunan Institute of Science and Technology","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74676526","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}

引用次数: 0

Maximum Capacity Path Problem with Arc Reversal 带电弧反转的最大容量路径问题

Journal of Hunan Institute of Science and Technology Pub Date : 2022-12-31 DOI: 10.3126/jist.v27i2.47223

H. Nath

引用次数: 0

Formulation and Evaluation of Cream Using Moringa oleifera L. Leaf Extract 辣木叶提取物乳霜的配方及评价

Journal of Hunan Institute of Science and Technology Pub Date : 2022-12-29 DOI: 10.3126/jist.v27i2.51322

R. Gyawali, D. Bhattarai, Niraj Bartaula, Ramendra Bastola, Shantosh Bhatta, Srijana Suwal, P. N. Paudel

{"title":"Formulation and Evaluation of Cream Using Moringa oleifera L. Leaf Extract","authors":"R. Gyawali, D. Bhattarai, Niraj Bartaula, Ramendra Bastola, Shantosh Bhatta, Srijana Suwal, P. N. Paudel","doi":"10.3126/jist.v27i2.51322","DOIUrl":"https://doi.org/10.3126/jist.v27i2.51322","url":null,"abstract":"There are an increasing number of studies on the cosmeceutical properties of medicinal plants growing in various climatic zones. The formulation of phenolic rich plant extracts into cosmetic cream products can maximize the commercial value of such products. Most of the herbs used in Nepal for cosmetic purposes are locally available Ayurvedic herbs. The antioxidant property of the ethanolic extracts of Moringa oleifera L. leaves collected from Rupandehi and Makawanpur districts respectively were determined by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity. Total phenolic and total tannin content was determined by Foline Ciocalteu reagent. Total phenolic content was found from 35.51 and 42.89 mg/100 g gallic acid in the Makawanpur and Rupandehi districts. Overall, findings revealed that there were slight differences in antioxidant properties between the two samples. The cream formulated from the Makawanpur plant sample had considerable physiochemical parameters within the range of acceptance. These findings provide strong evidence for further development of commercial creams with antioxidant properties","PeriodicalId":16072,"journal":{"name":"Journal of Hunan Institute of Science and Technology","volume":"07 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85978063","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}

引用次数: 1

Scientific Evaluation of Buddleja asiatica, Camellia sinensis, and Polygala arillata of Nepal 尼泊尔山茶、山茶和山茱萸的科学评价

Journal of Hunan Institute of Science and Technology Pub Date : 2022-12-29 DOI: 10.3126/jist.v27i2.51325

Kabin Chemjong, Bimala Subba

{"title":"Scientific Evaluation of Buddleja asiatica, Camellia sinensis, and Polygala arillata of Nepal","authors":"Kabin Chemjong, Bimala Subba","doi":"10.3126/jist.v27i2.51325","DOIUrl":"https://doi.org/10.3126/jist.v27i2.51325","url":null,"abstract":"Diabetes is one of the most prevalent diseases in the world. Medicinal plants remain to play an important role in the amelioration of diabetes and its complications. In this study, Buddleja asiatica, Camellia sinensis, and Polygala arillata were investigated for α-amylase inhibition, antioxidant, and antimicrobial activities. Methanolic extracts of these three plants were investigated for their potential antioxidant activity using DPPH assay. Total phenolic and flavonoid contents of extracts were evaluated by the following standard methods. The α-amylase inhibition assay was also carried out by starch-iodine assay and DNS assay method. Methanolic extract of B. asiatica, C. sinensis, and P. arillata exhibits a total phenolic content of 116.47 ± 6.62, 157.17 ± 18.79, and 44.27 ± 2.97 mg GAE per gm in dry weight of extracts (p < 0.0001) and flavonoid levels 5.99 ± 1.00, 34.28 ± 2.63, and 37.07 ± 2.24 (p < 0.0001) mg QE per gm in dry weights of extracts respectively. The extract showed promising antioxidant activity against DPPH with the IC50 values of C. sinensis (19.15 ± 4.32 μg/mL), B. asiatica (26.86 ± 2.00 μg/mL), and the standard the quercetin (2.36 ± 0.13 μg/mL). The extract showed modest α-amylase inhibitory activity. Methanolic extract of B. asiatica and C. sinensis were found effective against Staphylococcus aureus with zone of inhibition of 12.5 mm and 17 mm respectively. Therefore, obtained results support the traditional uses of these plants and also showed α-amylase inhibition activities although there are no reports about it.","PeriodicalId":16072,"journal":{"name":"Journal of Hunan Institute of Science and Technology","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81114576","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}

引用次数: 0

Antibacterial Activity of Lemon Juice on Multi-Drug Resistant Klebsiella species Harboring blaOXA-48 Gene 柠檬汁对携带blaxa -48基因的多重耐药克雷伯菌的抑菌活性研究

Journal of Hunan Institute of Science and Technology Pub Date : 2022-11-26 DOI: 10.3126/jist.v27i2.37483

Babita Malla, S. Khanal, S. K C, B. Yadav, D. Joshi

{"title":"Antibacterial Activity of Lemon Juice on Multi-Drug Resistant Klebsiella species Harboring blaOXA-48 Gene","authors":"Babita Malla, S. Khanal, S. K C, B. Yadav, D. Joshi","doi":"10.3126/jist.v27i2.37483","DOIUrl":"https://doi.org/10.3126/jist.v27i2.37483","url":null,"abstract":"Klebsiella species cause a wide range of infections, and infections caused by multi-drug resistant species have significantly higher rates of morbidity and mortality. Extended spectrum β-lactamase ESBL prodan emergingd carbapenem resistant K. pneumoniae is emerging problem in hospital settings worldwise. However, the distribution of blaOXA-48 in Klebsiella pneumoniae has rarely been described from Nepal. This study was carried out to evaluate in vitro antibacterial activity of lemon juice against clinical isolates of Klebsiella having blaOXA-48 gene. A total of 667 clinical specimens were processed for the identification of Klebsiella species by morphological, cultural and biochemical tests. Methods of antimicrobial susceptibility testing and confirmation of extended spectrum beta lactamase (ESBL) were adopted from the guidelines of the Clinical Laboratory Standard Institute (2018), and blaOXA-48 gene was detected by polymerase chain reaction. The antibacterial activity of lemon juice was assayed using agar well diffusion, and the bactericidal effect of lemon juice was determined by the broth dilution method. Out of 204 culture positive isolates, 29.5% were Klebsiella species of which 16.7% were ESBL producers. Among 19 isolates positive to Modified Hodge test, 68.4% were detected with the plasmid mediated blaOXA-48 gene. The MIC of lemon juice ranged from 12.5-50% (v/v), and the bacteriostatic activity was observed after 6-8 hours of exposure. The tested varieties of lemon juice showed potential inhibitory activity against Klebsiella species indicating that lemon juice has the potential to be used as an antibacterial agent.","PeriodicalId":16072,"journal":{"name":"Journal of Hunan Institute of Science and Technology","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83046204","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}

引用次数: 0

Impacts of Livestock Grazing on Vegetation and Soil in Lowland Grassland Ecosystem of Nepal 牲畜放牧对尼泊尔低地草地生态系统植被和土壤的影响

Journal of Hunan Institute of Science and Technology Pub Date : 2022-11-15 DOI: 10.3126/jist.v27i2.43568

Ritu Tuladhar, R. Sapkota, Ashok Parajuli, Birendra Gautam

{"title":"Impacts of Livestock Grazing on Vegetation and Soil in Lowland Grassland Ecosystem of Nepal","authors":"Ritu Tuladhar, R. Sapkota, Ashok Parajuli, Birendra Gautam","doi":"10.3126/jist.v27i2.43568","DOIUrl":"https://doi.org/10.3126/jist.v27i2.43568","url":null,"abstract":"Livestock grazing is one of the largest sectors for land use globally, and contrasting impacts (negative, neutral, and positive) of livestock grazing on vegetation and soil have been observed. In Koshi Tappu Wildlife Reserve (KTWR), livestock grazing is one of the major problems but has been feebly addressed in previous research. This study, therefore, aims to determine the impacts of livestock grazing on vegetation and soil quality in grasslands of core and buffer zones of KTWR. Less grazing intensity was observed at the core zone compared to the buffer zone. Livestock grazing was observed with negative impacts on the richness and diversity of the plant species causing changes in the community assemblages. Invasive plant species richness, however, was found higher in the low grazed areas. Differences in soil pH, phosphorus, and potassium content between high and low grazed areas were not observed. In contrast, soil electrical conductivity, bulk density, and nitrogen content were significantly higher in the high grazed areas. Controlled grazing is recommended at buffer zone grasslands of KTWR to enhance plant diversity and nutrient availability. The core areas of the reserve should be managed for reducing the abundance and distribution of invasive alien plant species.","PeriodicalId":16072,"journal":{"name":"Journal of Hunan Institute of Science and Technology","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85052837","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}

引用次数: 0

Assessment of Oral Cancer: A Study in Nepal Cancer Hospital and Research Center, Harisiddhi, Lalitpur, Nepal. 口腔癌的评估:尼泊尔癌症医院和研究中心的一项研究，Harisiddhi, Lalitpur，尼泊尔。

Journal of Hunan Institute of Science and Technology Pub Date : 2022-11-07 DOI: 10.3126/jist.v27i2.39139

K. Thapa, Puja Jaiswal

引用次数: 0

Prevalence of Gastrointestinal Helminth Parasites in Livestock of Kavrepalanchok kavrepalanchk家畜胃肠道寄生虫流行病学研究

Journal of Hunan Institute of Science and Technology Pub Date : 2022-11-05 DOI: 10.3126/jist.v27i2.39465

Semsal Tamang, Punya Ram Sukupayo

{"title":"Prevalence of Gastrointestinal Helminth Parasites in Livestock of Kavrepalanchok","authors":"Semsal Tamang, Punya Ram Sukupayo","doi":"10.3126/jist.v27i2.39465","DOIUrl":"https://doi.org/10.3126/jist.v27i2.39465","url":null,"abstract":"The study was carried out in Mandandeupur Municipality, Kavrepalanchok from December 2018 to May 2019. A total of 131 fecal samples of livestock were collected and examined under a microscope by using direct smear and sedimentation technique. Overall, 65.65% of samples were found positive with various types of gastrointestinal helminth parasites. Samples were collected from cows, buffaloes, and goats. Among the samples collected, the highest prevalence (76.47%) was observed among the cows and the least was found among buffaloes (57.14%) but was found statistically insignificant (p>0.05). The study revealed a prevalence of nematodes (74.47%), cestodes (7.70%) and trematodes (3.10%). The prevalence of Strongylus sp. was found highest (35.88%) and the prevalence of Cooperia sp., Hymenolepsis sp., Enterobius sp. and Fasciola sp. were found similar (0.8%). In sex wise study, both males and females of livestock were found about equally infected. In the same way, the prevalence of gastrointestinal helminths was found about similar in both the winter and summer seasons. In age wise prevalence, the adult was more infected (68.27%) with gastrointestinal helminth parasites than the young (55.55%) which was statistically insignificant (p>0.05). In the present study, single infection was found highest (47.29%) and multiple infections were found least (2.29%). The samples collected from non-dewormed livestock were found highly (71%) positive for gastrointestinal helminths. The relation between deworming and prevalence was statistically significant (p<0.05). Only 37.25% of farmers maintain the cleanliness of the shed by removing feces from the animal shed every day and only 23.53% of farmers know about the mode of transmission of gastrointestinal helminths in livestock.","PeriodicalId":16072,"journal":{"name":"Journal of Hunan Institute of Science and Technology","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75431476","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}

引用次数: 0