Journal of Tropical Resources and Sustainable Science (JTRSS)最新文献_第7页

Chemical Fingerprint Using FTIR and HPLC as Qualitative Analysis in the Study of Propagation of Labisia pumila Var. Alata 利用FTIR和HPLC进行化学指纹图谱定性分析研究臭唇虱的繁殖

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.547

M. N. Nazihah, M. A. Farah Fazwa, A Zunoliza, S. Suryani, H Siti Salwana

{"title":"Chemical Fingerprint Using FTIR and HPLC as Qualitative Analysis in the Study of Propagation of Labisia pumila Var. Alata","authors":"M. N. Nazihah, M. A. Farah Fazwa, A Zunoliza, S. Suryani, H Siti Salwana","doi":"10.47253/JTRSS.V3I1.547","DOIUrl":"https://doi.org/10.47253/JTRSS.V3I1.547","url":null,"abstract":"Labisia pumila, known as kacip fatimah is a traditional herbs widely used for women. The herb was used as a post partum medicine to help contract the birth channel. From previous research, 120 clones of Labisia pumila var. alata was collected from three different locations and 30 clones of the herbs was found having high yielding of total phenolic content (TPC). In this study, one clone from each location was selected for further analyses, which are TA14 from Kuala Berang, TSA13 from Kemaman and DA20 from Gua Musang. Fourier Transform Infrared spectroscopy (FTIR) associated with second derivative infrared spectroscopy was applied to identify the chemical fingerprint of each clone of Labisia pumila. This analytical method is highly rapid and effective for analysis of medicinal herbs. Second derivative IR spectroscopy could enhance the spectral resolution by amplifying tiny differences in the IR spectrum. In this method, the whole chemical property of the sample can be revealed and shown in the IR spectrum. A total of ten absorption peaks were obviously present in the IR spectra which can be used to characterize the species. The IR spectra shows the presence of broader peak at frequencies of range 3266 – 3338 cm-1 which attributable to the alcohol group. This study also attempts to develop HPLC fingerprint of the selected clones. Observation on HPLC spectra shows the presence of one distinct peak at retention time of 12.30, 12.99 and 12.93 min, respectively in each clone. This compound will be characterized and will be used as reference compound in quality assessment in plant breeding","PeriodicalId":17457,"journal":{"name":"Journal of Tropical Resources and Sustainable Science (JTRSS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90480111","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

Effect of Natural Background Noise and Man-Made Noise on Automated Frog Calls Identification System 自然背景噪声和人为噪声对青蛙叫声自动识别系统的影响

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.559

H. Jaafar, D. A. Ramli

{"title":"Effect of Natural Background Noise and Man-Made Noise on Automated Frog Calls Identification System","authors":"H. Jaafar, D. A. Ramli","doi":"10.47253/JTRSS.V3I1.559","DOIUrl":"https://doi.org/10.47253/JTRSS.V3I1.559","url":null,"abstract":"Frog identification based on their calls becomes important for biological research and environmental monitoring. However, identifying particular frog calls becomes challenging particularly when the frog calls are interrupted with noises either in natural background noise or man-made noise. Hence, an automatic identification frog call system that robust in noisy environment has been proposed in this paper. Experimental studies of 675 audio obtained from 15 species of frogs in the Malaysian forest and recorded in an outdoor environment are used in this study. These audio data are then corrupted by 10dB and 5dB noise. A syllable segmentation technique i.e. short time energy (STE) and Short Time Average Zero Crossing Rate (STAZCR) and feature extraction, Mel-Frequency Cepstrum Coefficients (MFCC) are employed to segment the desired syllables and extract the segmented signal. Subsequently, the Local Mean k-Nearest Neighbor with Fuzzy Distance Weighting (LMkNN-FDW) are employed as a classifier in order to evaluate the performance of the identification system. The experimental results show both of natural background noise and man-made noise outperform by 95.2% and 88.27% in clean SNR, respectively.","PeriodicalId":17457,"journal":{"name":"Journal of Tropical Resources and Sustainable Science (JTRSS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82911934","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: 3

The Creation of Protected Ecosystems as the Conservation-Friendly Way to Save Genus Begonia from Extinction 创建保护生态系统是拯救濒临灭绝的海棠属的保护友好途径

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.551

Nabieva A.Yu., T. Fershalova

引用次数: 0

Growth of Mutant Synechococcus SP. PCC 7002: Effects of Multi-Parameters and Prediction of Growth Rate 聚珠球菌突变体pcc7002的生长:多参数影响及生长速率预测

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.553

N. F. M. Azmin, Atikah Mohamed Sharikh, Ummi S. Halmi Shari, A. S. Azmi

{"title":"Growth of Mutant Synechococcus SP. PCC 7002: Effects of Multi-Parameters and Prediction of Growth Rate","authors":"N. F. M. Azmin, Atikah Mohamed Sharikh, Ummi S. Halmi Shari, A. S. Azmi","doi":"10.47253/JTRSS.V3I1.553","DOIUrl":"https://doi.org/10.47253/JTRSS.V3I1.553","url":null,"abstract":"Understanding of the correlative effects of combined variables on the growth rate of the cyanobacteria is fundamental to the exploitation of cyanobacteria as a biological mechanism to produce biofuels. Cyanobacteria (blue-green algae) are phototrophic microorganisms that offers attractive benefits, among which is a direct conversion of CO2 to a range of valuable products such as carbon-based biofuels. One model of cyanobacteria species is the cyanobacterium Synechococcus sp. PCC 7002. This paper describes the model developed to investigate the combined impacts of the variables on the growth of the Synechococcus sp. PCC 7002. The variables understudy include the temperature of the media, light intensity, the concentration of NaNO3, and the concentration of the NPK. The data is obtained from a lab scale study in which the Synechococcus sp. PCC 7002 underwent mutagenesis procedures. It is hypotheses that certain combination of the variables plays a key role in determining the growth rate of Synechococcus sp. 7002. The growth rate is determined through the measurement of four response variables, carbohydrate concentration, percentage of CO2 uptake, cell dry weight (CDW), and optical density (OD). A multivariate PCA model was developed which unearths the underlying relationship between the variables. Promising results were yield from the proposed model. Distinctive correlations between the variables were clearly described by the PCA model.","PeriodicalId":17457,"journal":{"name":"Journal of Tropical Resources and Sustainable Science (JTRSS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81825815","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

Phylogenetic Analysis of Mitochondrial Genes of Malaysian Tupaia Reveals Composite Species in Tupaia Glis 马来西亚图帕亚线粒体基因的系统发育分析揭示了图帕亚Glis的复合物种

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.557

J. Kumaran, A. S. Othman, S. A. Sah, Seri Intan Mokhtar

引用次数: 1

New Clone of Sesenduk (FRIMsrp001) Sesenduk新克隆(FRIMsrp001)

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.545

K. Masseat, M. Mahat, I. Kamal, A. Saleh, Yanti Abdul Kadir

{"title":"New Clone of Sesenduk (FRIMsrp001)","authors":"K. Masseat, M. Mahat, I. Kamal, A. Saleh, Yanti Abdul Kadir","doi":"10.47253/JTRSS.V3I1.545","DOIUrl":"https://doi.org/10.47253/JTRSS.V3I1.545","url":null,"abstract":"The clone was produced from a breeding attempt on pioneer indigenous species of Endospermum diadenum. Seeds from the tree were collected and then were propagate and germinated in FRIM’s nursery. The selection process continued for the progeny which has possessed vigorous growth among others. A bud from the plant was successfully tissue-cultured, which multiplied and developed roots in glass container. The clone was planted in year 1996 at Kepong Botanical Garden (FRIM’s KBG) and Kampung Jawa plantation plots in FRIM. The seedlings of the clone were able to grow and survive at open site. Several trees of the planted clone from these areas have been cut for timber testing for its basic properties as well as for product development. The wood of the clone trees possessed good physical and mechanical properties and acceptable wood colour (yellow to white colour). The trees were able to achieve 30cm in diameter and 24m in height of straight bole in 10 years after planting provided that the soil at the plantation site is well-nurtured. Short rotation of planting, practiced for the clone is suitable for forest plantation and sustainable supply of raw material either for solid furniture industry or wood-based industry.","PeriodicalId":17457,"journal":{"name":"Journal of Tropical Resources and Sustainable Science (JTRSS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78171581","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

Dye Adsorbent by Activated Carbon 活性炭染料吸附剂

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.552

N. Selvanathan, N. S. Subki, Muhammad Azwadi Sulaiman

引用次数: 7

Chemical Composition of Clays for Pottery in Malaysia: A Review 马来西亚陶器粘土化学成分研究进展

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.549

N. A. Gani, M. S. Shamsuddin, W. K. Koo, M. N. Masri, Muhammad Azwadi Sulaiman

{"title":"Chemical Composition of Clays for Pottery in Malaysia: A Review","authors":"N. A. Gani, M. S. Shamsuddin, W. K. Koo, M. N. Masri, Muhammad Azwadi Sulaiman","doi":"10.47253/JTRSS.V3I1.549","DOIUrl":"https://doi.org/10.47253/JTRSS.V3I1.549","url":null,"abstract":"Pottery in Malaysia is been known for its utilized functions and unique properties. Clays as the pottery’s raw materials are a major factor that affecting the quality and reliability of some pottery products. Observations on clays’ elements and phases are very helpful for productions of the good pottery. Hence, in this review, chemical compositions of clays in terms of elements and phases structures are discussed. Basically, the most elements found in clays are Si, Al, Fe, Ti, K and Ca. Depends on location, the concentrations for those clays elements in Malaysia are at range of 24.8 – 32.4 for Si, 10.8 – 19.0 for Al, 0.09 – 2.12 for Fe, 0.08 – 1.13 for Ti and 0.45 – 3.39 for K. Several studies reported, they exist in form of oxide compound which are SiO2, Al2O3, Fe2O3, TiO2, MgO, CaO, Na2O, K2O and P2O5. The percentages of elements in clays do not only determine the clays characteristics, but also influence the physical, mechanical and chemical properties of the end product. Increase of major element like silica arises the melting point, lowers the fluidity, and enhances the hardness and tensile strength. Meanwhile, increase alumina content enables the green body to withstand the sintering temperature and also increase the hardness of the pottery.","PeriodicalId":17457,"journal":{"name":"Journal of Tropical Resources and Sustainable Science (JTRSS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79412965","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: 7

Water Quality and Phytoplankton Distribution of the Lower Kinabatangan River Catchment, Sabah 沙巴州京那巴丹甘河下游集水区的水质和浮游植物分布

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.558

Sahana Harun, Norfarahin Uja, Arman Hadi Fikri

{"title":"Water Quality and Phytoplankton Distribution of the Lower Kinabatangan River Catchment, Sabah","authors":"Sahana Harun, Norfarahin Uja, Arman Hadi Fikri","doi":"10.47253/JTRSS.V3I1.558","DOIUrl":"https://doi.org/10.47253/JTRSS.V3I1.558","url":null,"abstract":"A study on water quality and phytoplankton distribution was carried out at the Lower Kinabatangan River Catchment, Sabah in November 2013, January 2014 and March 2014. The objectives were to study the surface water quality of the Lower Kinabatangan River Catchment; to identify the composition of phytoplankton in three different types of land use in Sukau, Kinabatangan; and to determine spatial and temporal variations of water quality in Sukau, Kinabatangan. Three sampling stations were selected to represent different types of land use, consisting of oil palm plantation (OP), secondary forests (SF) and oxbow lake (OB). Based on Interim National Water Quality Standards (INWQS) for Malaysia, the parameters were categorized within Class I to Class IV. Statistical analyses ANOVA one-way, paired sample t-test and discriminant analysis have been carried out to both water quality and total monthly precipitation data sets. The distribution of phytoplankton in Kinabatangan River consisted of 5 divisions: the Bacillariophyta, Chlorophyta, Cyanophyta, Cryptophyta and Euglenophyta. Chlorophyta recorded the highest diversity, with 10 species recorded out of 17 species found of the Lower Kinabatangan River Catchment. Discriminant analysis suggested that UV-visible absorption coefficients at 254 and 340 nm were dominant in samples from OP and SF. Temporal variations showed that parameters suspended sediment, UV-visible absorption coefficients at 254 and 340 nm were dominant in samples from collected in January 2014.","PeriodicalId":17457,"journal":{"name":"Journal of Tropical Resources and Sustainable Science (JTRSS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74846661","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: 2

Calorific Value of Leaves of Selected Dipterocarp Trees Species in Piah Forest Reserve, Perak 霹雳州碧亚森林保护区部分双龙果树种叶片热值研究

Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2021-07-18 DOI: 10.47253/JTRSS.V3I1.544

Dayang Nur Sakinah Musa, A. Nuruddin

引用次数: 2