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The Effect of Heavy Metal Pollutants on Bioluminescence Intensity of Luminous Mushrooms (Nenothopanus sp) 重金属污染物对夜光蘑菇生物发光强度的影响
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2020-09-30 DOI: 10.24036/EKSAKTA/VOL21-ISS2/235
Witriani Marvinatur Ihsan, R. Ratnawulan
{"title":"The Effect of Heavy Metal Pollutants on Bioluminescence Intensity of Luminous Mushrooms (Nenothopanus sp)","authors":"Witriani Marvinatur Ihsan, R. Ratnawulan","doi":"10.24036/EKSAKTA/VOL21-ISS2/235","DOIUrl":"https://doi.org/10.24036/EKSAKTA/VOL21-ISS2/235","url":null,"abstract":"In the South Coastal Forest area, West Sumatra, a luminous mushroom with the species Neonothopanus Sp. This research was conducted with the aim of seeing the effect of heavy metals on the bioluminescence reaction of luminous mushrooms. Starting from the effect of heavy metal concentrations on the intensity and inhibition coefficient of luminous mushroom biolumination. From the measurement results, the maximum intensity value of luminous mushrooms is 499.6 au occurring at a wavelength of 505 nm. At a wavelength of 505 nm, visible light is produced in green. The results obtained are in accordance with observations, because the light emitted by the glowing mushroom is green. If the concentration of heavy metals is greater, the intensity of the bioluminescent fungus (Neonothopanus sp) will decrease. The type of heavy metal affects the intensity of the fungus biolumination. The greatest decrease in intensity occurred in copper (Cu) and iron (Fe), zinc (Zn) and lead (Pb). If the heavy metal concentration is greater, the inhibition coefficient will be smaller. The greatest inhibition coefficient due to the presence of heavy metals occurs in copper (Cu) then iron (Fe), zinc (Zn) and the smallest is lead (Pb).","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116170784","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
Comparison of Serum HIF-1α Levels in Swimming Athletes Before and After Hypoxic Non-Hypoxic Exercise 游泳运动员缺氧非缺氧运动前后血清HIF-1α水平的比较
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2020-04-30 DOI: 10.24036/EKSAKTA/VOL21-ISS1/223
S. Syahrastani, A. Argantos, S. Farma
{"title":"Comparison of Serum HIF-1α Levels in Swimming Athletes Before and After Hypoxic Non-Hypoxic Exercise","authors":"S. Syahrastani, A. Argantos, S. Farma","doi":"10.24036/EKSAKTA/VOL21-ISS1/223","DOIUrl":"https://doi.org/10.24036/EKSAKTA/VOL21-ISS1/223","url":null,"abstract":"The situation of lack of oxygen supply to cells and tissues is often not realized by many people (hypoxia). Hypoxia can occur in various situations in life. The main effect of hypoxia is the effect on the brain, so the body will do everything it can to restore the state of homeostasis. HIF-1α protein is a marker of hypoxic conditions. HIF-1α regulates the synthesis of many genes to maintain and restore body homeostasis from hypoxia to normoxia. This study was a descriptive study with cross-sectional design. The sample of this study were six swimming athletes with a 12-19 year age range who met the inclusion and exclusion criteria. The HIF-1α protein is measured by the ELISA method. Data were analyzed statistically. The results showed higher levels of HIF-1α after anaerobic exercise than the levels of HIF-1α before and after aerobic exercise. This is greatly influenced by the intensity of the exercise carried out. This proves that cellular adaptation to hypoxia is more stable in aerobic exercise, where the body's metabolism during aerobic exercise is more stable  ","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"396 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117315615","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: 4
Parameter Estimation STAR (1;1) Model Using Binary Weight 基于二元权值的STAR(1;1)模型参数估计
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/199
K. Joebaedi, I. Irianingsih, Badrulfalah Badrulfalah, D. Susanti, K. Parmikanti
{"title":"Parameter Estimation STAR (1;1) Model Using Binary Weight","authors":"K. Joebaedi, I. Irianingsih, Badrulfalah Badrulfalah, D. Susanti, K. Parmikanti","doi":"10.24036/eksakta/vol20-iss2/199","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/199","url":null,"abstract":"Space Time Auto Regressive(1;1)  Model or STAR(1;1)  model is a form of model that involves location and time. The STAR(1;1)  model is a stationary space time model in mean and variance. The STAR model can be used to forecast future observations at these locations by involving the effects of observations at other nearby locations in spatial lag 1 and lag time 1 [2]. The STAR model can be written as a linear model assuming that error is normally distributed with zero mean and constant variance. In this research, the parameter estimation procedure for STAR model using binary weight, MKT method and STAR model for the estimation of petroleum production in 3 wells is assumed to be in a homogeneous reservoir.","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129756984","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
Comparison of Corrosion Rate in the Environment of 10% Acetic Acid solution with different Deflection. 不同偏转度下10%醋酸溶液环境腐蚀速率的比较
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/190
N. S. Syafei, S. Rizki, S. Suryaningsih, Darmawan Hidayat
{"title":"Comparison of Corrosion Rate in the Environment of 10% Acetic Acid solution with different Deflection.","authors":"N. S. Syafei, S. Rizki, S. Suryaningsih, Darmawan Hidayat","doi":"10.24036/eksakta/vol20-iss2/190","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/190","url":null,"abstract":"The oil and gas industry exploration that will generally be followed by corrosive substances including sweet gas (eg H2S and CO2), it will result in corrosion event. The corrosion stress cracking will cause the carbon steel pipe to break so that production oil and gas can be stopped. The research aims in this paper is to analyze the corrosion event of carbon steel pipe in laboratory scale on acid environment with the existence of sweet gas H2O and CO2 by using three points loading method. This research uses carbon steel pipe API 5L-X65 which stay in condensation environment of 1350 ml aquades, 150 ml acetic acid. Based on the figure (5.a) and figure (5.b) that the corrosion rate will increase with increasing exposure time, and the greater the stress that is given, the corrosion rate increases according to the image (6.a) and image (6.b). Whereas based on the results of microstructural tests using optical microscopes, pitting corrosion occurs, and corrosion events  occur are the stress corrosion cracking transgranular and intergranular based on figure 8. \u0000 ","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126366379","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
Broiler Response on Increase in Flour Leaves Miana (Coleus atropurpureus, L) as a Feed Aditive in Ration 肉仔鸡日粮中添加蓝花叶(Coleus atropurpureus, L)的响应
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/203
N. Fati, R. Siregar, Ulva Mohtar Luthfi, Debby Syukriani, Toni Malvin
{"title":"Broiler Response on Increase in Flour Leaves Miana (Coleus atropurpureus, L) as a Feed Aditive in Ration","authors":"N. Fati, R. Siregar, Ulva Mohtar Luthfi, Debby Syukriani, Toni Malvin","doi":"10.24036/eksakta/vol20-iss2/203","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/203","url":null,"abstract":"Increased bacterial resistance to antibiotics provides a great opportunity to obtain antibacterial compounds by utilizing bioactive compounds from biological natural wealth. In Indonesia there are many known medicinal plants. Miana plants (Coleus atropurpureus, L) are one of the potential medicinal plants in Indonesia. This plant is widely used as medicine. This study aims to determine the effect of adding miana leaf flour to the ration on body weight gain, feed consumption, feed conversion and carcass percentage. This study used a completely randomized design with 5 treatments and 4 replications. The treatment was A = control, B = 1% Miana leaf flour / kg ration. C = 2% leaf flour miana / kg ration, D = 3% miana leaf flour / kg ration E = 4% miana leaf flour / kg ration. What was observed were performance and carcass including feed consumption, feed conversion, body weight gain, carcass percentage. The results of this study showed that the addition of miana leaf flour in the ration had no significant effect (P> 0.05) on body weight gain, feed conversion, feed consumption and carcass percentage. Giving miana leaf flour in the ration can be  tolerated up to 4% in broiler rations.","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121731735","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: 5
Bacterial Isolation Which is Potential as Cellulosa Pedegradation in Coastal Performance In Tanjungpinang City 丹中槟榔市滨海性能中纤维素降解潜力的细菌分离
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/206
I. Iskandar, H. Horiza
{"title":"Bacterial Isolation Which is Potential as Cellulosa Pedegradation in Coastal Performance In Tanjungpinang City","authors":"I. Iskandar, H. Horiza","doi":"10.24036/eksakta/vol20-iss2/206","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/206","url":null,"abstract":"Many black water or feces and urine field observations in Tanjung Pinang City were dumped directly into the ditches, rivers, and sea. This proves that the management of domestic liquid waste in the City of Tanjungpinang, especially black water, has not yet received serious attention, resulting in a decline in environmental quality. One of the stages in processing black water is decomposition. The decomposition process can be assisted by bacteria, one of which is cellulose-degrading bacteria. This study aims to find bacterial isolates that have the potential to degrade cellulose in feces from coastal soils in Tanjung Pinang City. This research is a laboratory experimental research. The results of this study were obtained 16 bacterial isolates that can degrade cellulose. From these 16 isolates, 3 genera of bacteria were obtained, namely Pseudomonas, Acetobacter and Acinetobacter. Keywords: Cellulose Degradation Bacteria, Coastal Soil  ","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114594358","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
Statistical Analysis to Evaluate The Service Quality at Community Health Center in Padang, Indonesia 印尼巴东社区卫生中心服务质量评价的统计分析
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/198
A. Zetra, F. Yanuar
{"title":"Statistical Analysis to Evaluate The Service Quality at Community Health Center in Padang, Indonesia","authors":"A. Zetra, F. Yanuar","doi":"10.24036/eksakta/vol20-iss2/198","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/198","url":null,"abstract":"Healthcare provider have to take care of patient satisfaction. Therefore, the management should do a kind of evaluation to examine the patient satisfaction on the corresponding services. The purpose of this study is to evaluate the service quality of public health centre and to identify the attributes of services to be improved. This study was cross sectional study conducted by distributing the questionairres to the patients of public health centre in Padang, Indonesia from April to June 2015. This study involved 446 respondents with complete information. Customer Satisfaction Index (CSI) was used to measure the service quality of corresponding public health centre. Importance Performance Analysis (IPA) approach was also applied to identify any attributes to be improved. The respondents of this study were very satisfied with the health service that they ever got. All attributes of service were plotted in four quadrants. This study proved that CSI and IPA methods are pertinent to be applied to measure patient satisfaction and identify any attributes of service to be maintained or improved.","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125688936","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
Development of a Digital Dip Coating System Based Microcontroller 基于单片机的数字浸涂系统的研制
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/204
Y. Yohandri, K. Khairunnisa, R. Ramli, R. Zainul
{"title":"Development of a Digital Dip Coating System Based Microcontroller","authors":"Y. Yohandri, K. Khairunnisa, R. Ramli, R. Zainul","doi":"10.24036/eksakta/vol20-iss2/204","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/204","url":null,"abstract":"Coating techniques are important parts in the development of nano material technology. In this paper, the development of coating technology based on microcontroller using dip coating is presented. Arduino microcontroller is implemented to control the immersion time and the speed of withdrawal of material out of the coating fluid through a stepper motor. In addition, the withdrawal speed can be digitally entered through a keypad with a value range of 0.02 mm/s to 10 mm/s. The experiment results showed the percentage of accuracy and precision of the microcontroller based dip coater was very high. Based on these results, the developed dip coater is satisfied to be used in the development of nanotech materials","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126919728","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
Antimicrobial Activities of Extract of Andalas Endophytic Bacterial Fermentation Products in Overcoming Oral Cavity Infection Andalas内生细菌发酵产物提取物对口腔感染的抑菌活性研究
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/181
D. Putri, Ratih Rahayu, D. Sahara, Nurhelmi Nurhelmi, V. Violita
{"title":"Antimicrobial Activities of Extract of Andalas Endophytic Bacterial Fermentation Products in Overcoming Oral Cavity Infection","authors":"D. Putri, Ratih Rahayu, D. Sahara, Nurhelmi Nurhelmi, V. Violita","doi":"10.24036/eksakta/vol20-iss2/181","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/181","url":null,"abstract":"Dental and oral infection problems can be overcome using natural antimicrobial compounds from bacterial endophytic resulted from bacterial fermentation. This study aims to determine the effectiveness of extracts of Andalas endophytic bacterial fermentation products in treating oral cavity infections. Fermentation products was extracted using maceration methods. Antimicrobial activity of Andalas endophytic bacterial fermentation product was evaluated to S. mutans and C. albicans by disk diffusion method. The study showed that the optimum concentration of extract in inhibiting microbial growth that causes oral cavity infections was at  12.5%.","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123621284","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
A Preliminary Screening of the Different of Secondary Metabolites Ruku-Ruku Leaves (Ocimum tenuiflorum Linnen) in West Sumatera 西苏门答腊鲁库-鲁库叶次生代谢产物差异的初步筛选
Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/193
H. Parbuntari, S. B. Etika, M. Mulia, E. Delvia
{"title":"A Preliminary Screening of the Different of Secondary Metabolites Ruku-Ruku Leaves (Ocimum tenuiflorum Linnen) in West Sumatera","authors":"H. Parbuntari, S. B. Etika, M. Mulia, E. Delvia","doi":"10.24036/eksakta/vol20-iss2/193","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/193","url":null,"abstract":"Ruku-ruku leaves are used to remove distinctive odors from fish in some cuisine of West Sumatra. The characteristic odor comes from secondary metabolites especially essential oils. Therefore, secondary metabolites in ruku-ruku leaves have the potential to be further investigated as a source of bioactive compounds. The phytochemical screening of ruku-ruku leaves is a preminilary qualitative test that needs to be done to maximise its function as a medicinal plant. Based on the result data, there are some different result of flavonoid, steroids, and triterpenoids identification. Ruku-ruku leaves from Pesisir Selatan and Padang Panjang shows less flavonoid compounds tham Payakumbuh, Batusangkar, and Lubuk Alung. Both of this city and Payakumbuh also gives less steroids and triterpenoids. The factor influencing this result is caused by several factors, namely temperature, humidity, light exposure, and salinity.","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125792642","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: 4
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