American Journal of Environment and Climate最新文献_第5页

Effects of Varying Nutrient Solution to Brassica Rapa “Bokchoy” Grow Under Hydroponic System 不同营养液对水培条件下油菜生长的影响

American Journal of Environment and Climate Pub Date : 2022-08-20 DOI: 10.54536/ajec.v1i2.485

Angel Lhi Dela Cruz, Chinitt P. Sinco, Ma. Lourdes S. Cantor, Michelle T. Viña, J. G. Bolaños, Romeo Jr. B. Bordios

{"title":"Effects of Varying Nutrient Solution to Brassica Rapa “Bokchoy” Grow Under Hydroponic System","authors":"Angel Lhi Dela Cruz, Chinitt P. Sinco, Ma. Lourdes S. Cantor, Michelle T. Viña, J. G. Bolaños, Romeo Jr. B. Bordios","doi":"10.54536/ajec.v1i2.485","DOIUrl":"https://doi.org/10.54536/ajec.v1i2.485","url":null,"abstract":"The fact that farming is dependent on available land becomes even more complex when the climate is changing drastically. From this perspective, soilless system production is advantageous since it allows farmers to utilize land that has been unproductive due to pollution or illness, while simultaneously reducing the quantity of water consumed. According to the discussion and conclusions that accompany the results, the growth and development of Brassica rapa are affected by the nutrients it receives in treatments. The concentrations of nutrient solutions have a significant impact on the growth of Brassica rapa. As the number of Brassica rapa layers increases, the Brassica rapa yield increases and improves, particularly in terms of plant yield. The effects of nutritional solutions on plant growth, fresh weight, water consumption, and the number of nutrients in leaf tissue demonstrated that the interactions between factors are not the same. According to the findings of the study, the collected nutrients could be used as fertilizer. Therefore, hydroponic systems will require less mineral fertilizer. The environmental temperature is one of the most important abiotic factors that could slow down the process of development, production, and spread. Based on the data, it is feasible to conclude that the cultivar is more resistant to cold stress.","PeriodicalId":199881,"journal":{"name":"American Journal of Environment and Climate","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117216453","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 Cassava Manihot Esculenta Leaves Extract Against Escherichia coli 木薯叶提取物对大肠杆菌的抑菌活性研究

American Journal of Environment and Climate Pub Date : 2022-08-18 DOI: 10.54536/ajec.v1i2.484

Angel Lhi Dela Cruz, Neil John L. Buendia, Rikka Bianca J. Condes

{"title":"Antibacterial Activity of Cassava Manihot Esculenta Leaves Extract Against Escherichia coli","authors":"Angel Lhi Dela Cruz, Neil John L. Buendia, Rikka Bianca J. Condes","doi":"10.54536/ajec.v1i2.484","DOIUrl":"https://doi.org/10.54536/ajec.v1i2.484","url":null,"abstract":"The purpose of this research is to determine the antibacterial activity of Cassava (Manihot esculenta) leaf extract against Escherichia coli. The experiment involved the determination of plants, extraction using the maceration method, and antibacterial testing of the fresh and dried cassava (Manihot esculenta) leave extracted with concentrations of 5%, 10%, 20%, and 30% ethanol against the bacterial growth of (Escherichia coli) and culture media using Merck Nutrient Agar. A caliper was used to measure the size of (Escherichia coli) growth in millimeters. The results showed that extracts of fresh and dried cassava (Manihot esculenta) leaves extract with ethanol concentrations of 5%, 10%, 20%, and 30% have antibacterial activity against Escherichia coli. This study examined the efficacy of fresh and dried cassava (Manihot esculenta) leaves extract against (Escherichia coli) in the 18th and 24th hours. The mean of fresh cassava (Manihot esculenta) leaves extract is 4.4, which differs considerably from the mean of dried Cassava (Manihot esculenta) leaves extract, which is 3.9. The fresh cassava (Manihot esculenta) leaves extract was the most potent therapy against (Escherichia coli) in the 18th hour, according to the findings of this investigation. Furthermore, at the 24th hour, the fresh cassava (Manihot esculenta) leaves extract was the most potent therapy against (Escherichia coli). Fresh cassava (Manihot esculenta) leaves extract has a mean of 4.4, which differs significantly from dried (Manihot esculenta) leaves extract, which has a mean of 3.9. According to the findings of this study's testing, the 20 percent concentration of fresh cassava (Manihot esculenta) leaves extract with an average of 5.75 was the most active treatment against (Escherichia coli). It has been proposed that cassava (Manihot esculenta) leaves could be turned into standardized antibacterial herbal. Future research should investigate the effects of cassava (Manihot esculenta) leaves used as an antibacterial agent on human health.","PeriodicalId":199881,"journal":{"name":"American Journal of Environment and Climate","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117236807","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

Responses of Brassica rapa “Bokchoy” to Varying Light Intensities Grown Under Hydroponic System 水培条件下芥蓝对不同光强的响应

American Journal of Environment and Climate Pub Date : 2022-08-18 DOI: 10.54536/ajec.v1i2.486

Angel Lhi Dela Cruz, Chinitt P. Sinco, Ma. Lourdes S. Cantor, Michelle T. Viña, Jolai R. Garcia-Bolaños, Rikka Bianca J. Condes, Romeo Jr. B. Bordios

引用次数: 0

The Fight Against Climate Change: Adaptive and Strategies Activities Among Farmers 应对气候变化:农民的适应和战略活动

American Journal of Environment and Climate Pub Date : 2022-07-17 DOI: 10.54536/ajec.v1i2.344

Ali K. Dilangalen

引用次数: 1

Antifungal Effects of Different Commercial Products Against Fusarium oxysporum f. sp. cubense TR4 Causing Fusarium Wilt of Banana 不同商品产品对引起香蕉枯萎病的尖孢镰刀菌TR4的抑菌效果

American Journal of Environment and Climate Pub Date : 2022-06-02 DOI: 10.54536/ajec.v1i2.207

M. A. G. Figueroa, Artemio S Hagonos Jr

{"title":"Antifungal Effects of Different Commercial Products Against Fusarium oxysporum f. sp. cubense TR4 Causing Fusarium Wilt of Banana","authors":"M. A. G. Figueroa, Artemio S Hagonos Jr","doi":"10.54536/ajec.v1i2.207","DOIUrl":"https://doi.org/10.54536/ajec.v1i2.207","url":null,"abstract":"Banana production is seriously threatened by Fusarium wilt, also known as Panama disease worldwide. Regulatory control and the use of biological control agent, Trichoderma harzianum showed to be effective in minimizing the development and spread of the disease in the area. Some studies also showed the potential of some commercially-available fungicides in managing the disease. In this study, different commercial products applied singly and in combinations were evaluated against FocTR4 causing Fusarium wilt of banana and the most effective treatment combinations for the management of FocTR4 was determined under in vitro test condition. Treatments used in the experiment were as follows: T1- Control; T2- B. subtilis alone; T3-Fosetyl-Aluminum alone; T4-Fluopyram alone; T5- B. subtilis + Fosetyl-Aluminum; T6-B. subtilis + Fluopyram; T7-Fosetyl-Aluminum + Fluopyram and T8- B. subtilis + Fosetyl-Aluminum + Fluopyram. The experiment was laid out in Completely Randomized Design (CRD) with three replications. Data were statistically analyzed using the Analysis of Variance (ANOVA) and the treatment means were compared using Tukey’s Honest Significant Difference (HSD). Results of the study showed that treatments of B. subtilis in combinations with Fosetyl-Al or Fluopyram and the combinations of these three products had totally inhibited and killed FocTR4. Single treatment of Fosetyl-Al and the combinations of the products had totally inhibited the growth and spore production of FocTR4 however, validation test revealed that Fosetyl-Al alone and its combination to Fluopyram induces chlamydospore production instead of killing the pathogen.","PeriodicalId":199881,"journal":{"name":"American Journal of Environment and Climate","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115026760","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

Electricity Generation and Renewable Energy Policy in Nigeria: Resolving the Regulatory Challenges 尼日利亚的发电和可再生能源政策:解决监管挑战

American Journal of Environment and Climate Pub Date : 2022-05-27 DOI: 10.54536/ajec.v1i1.258

Dr Ayoyemi Lawal Arowolo, Tayo Douglas

{"title":"Electricity Generation and Renewable Energy Policy in Nigeria: Resolving the Regulatory Challenges","authors":"Dr Ayoyemi Lawal Arowolo, Tayo Douglas","doi":"10.54536/ajec.v1i1.258","DOIUrl":"https://doi.org/10.54536/ajec.v1i1.258","url":null,"abstract":"Since the 1960s, inadequate electricity generation has been the bane of economic developments in Nigeria. The introduction of reforms and policies in the electricity sector, for the purposes of exploring renewable energy in electricity generation, is yet to bring about increased electricity generation. This paper examines the challenges of renewable electricity in Nigeria from the regulatory perspective. Studies have shown that the failure of Nigeria to have a regulator specifically for renewable energy is closely linked with the history of electricity generation in Nigeria. Till date, Nigeria does not have a regulator with specific mandates for the development of renewable energy even though there are many regulators with overlap of functions over the development of renewable electricity. Moreover, the power of the Nigerian Electricity Regulatory Commission over the promotion of renewable energy is limited to renewable technologies of certain capacities. This paper will analyse the history of electricity generation in Nigeria in the context of the law and the policy to ascertain how the country has approached the development of renewable energy for electricity generation. The aim is to identify regulatory impediments to the development of renewable electricity from the law and the policy in Nigeria. Recommendations will be made for the establishment of a renewable electricity regulator independent of the existing bodies\u0000 ","PeriodicalId":199881,"journal":{"name":"American Journal of Environment and Climate","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126828794","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

Microbial Fuel Cell Bio-Remediation of Lambda Cyhalothrin, Malathion and Chlorpyrifos on Loam Soil Inoculated with Bio-Slurry 微生物燃料电池对接种生物浆的壤土上氯氟氰菊酯、马拉硫磷和毒死蜱的生物修复

American Journal of Environment and Climate Pub Date : 2022-05-25 DOI: 10.54536/ajec.v1i1.249

M. J. K, K. A, M. D. N, Kithure J L, Wandiga S O, Waswa A G

{"title":"Microbial Fuel Cell Bio-Remediation of Lambda Cyhalothrin, Malathion and Chlorpyrifos on Loam Soil Inoculated with Bio-Slurry","authors":"M. J. K, K. A, M. D. N, Kithure J L, Wandiga S O, Waswa A G","doi":"10.54536/ajec.v1i1.249","DOIUrl":"https://doi.org/10.54536/ajec.v1i1.249","url":null,"abstract":"In microbial fuel cell technology, the substrate is consumed by microbes in anaerobic conversion of substrate to electricity. Bio-remediation of pollutants involves microbial environmental cleanup using green approach. The primary problems with pesticides are linked to the non-negligible proportion of the sprayed active ingredient that does not reach its intended target thereby contaminating environmental compartments persistently. The primary objective of this study was to assess the potential of microbial fuel cell technology in bio-remediation of lambda cyahlothrin, chlorpyrifos and malathion in Limuru loam soil. H-shaped double chamber microbial fuel cell was fabricated where the anodic chamber was loaded with 750 mL loam soil inoculated with 750 mL bio-slurry doped with 10 mL of 10 ppm lambda cyhalothrin, chlorpyrifos and malathion pesticide solutions. The cathodic chamber was loaded with 1500 mL distilled water. The setup was incubated for a 90 days retention time where voltage and current were recorded daily using a multi-meter. The degradation level was assessed using a GC-MS after sample extraction using standard QuEChERs method. The voltage generated from the pesticide doped loam soil showed an upward trend from day 0 to day 15 in lambda cyhalothrin and malathion and from day 0 to day 20 in chlorpyrifos and pesticide mixture after which constant readings were observed for three days with downward trends thereafter. The maximum generated voltage was 0.537 V, 0.571 V, 0.572 V and 0.509 V in chlorpyrifos, lambda cyhalothrin, malathion and pesticide mix (MCL) respectively. The bioremediation levels for chlorpyrifos and malathion were 65.80 % and 71.32 %, respectively while no detectable, lambda cyhalothrin was observed after day 60 of the study. This study concludes that bioremediation of lambda cyhalothrin, chlorpyrifos and malathion in Limuru loam soil can be achieved using microbial fuel cells.","PeriodicalId":199881,"journal":{"name":"American Journal of Environment and Climate","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125052444","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

Efficacy of Newly Developed Activated Carbon from Bark of Butea monosperma For Removal of Hexavalent Chromium 新研制的单精子丁茶树皮活性炭去除六价铬的效果研究

American Journal of Environment and Climate Pub Date : 2022-05-12 DOI: 10.54536/ajec.v1i1.180

H. S S

{"title":"Efficacy of Newly Developed Activated Carbon from Bark of Butea monosperma For Removal of Hexavalent Chromium","authors":"H. S S","doi":"10.54536/ajec.v1i1.180","DOIUrl":"https://doi.org/10.54536/ajec.v1i1.180","url":null,"abstract":"Heavy metals present in the aquatic systems have become a serious problem. Due to this reason, it has been a great concentration on the development of new technologies for the removal of heavy metal ions from contaminated water. The adsorption process is one ofthe effective technology for the removal of toxic heavy metal ions. Hexavalent chromium is one of the major metal ion pollutants in the environment and is present in wastewater from most of the various industrial sections. Several conventional physical and chemical treatment technologies are reported in the literature for the removal of hexavalent chromium. But, these processes are expensive and energy-intensive and lead to the generation of harmful and carcinogenic by-products. In the recent study, the adsorption ability of activated carbon derived from the bark of Butea monosperma for removal of Cr(VI) from polluted water has been studied with respect to different parameters like the effect of pH, adsorbent dosage, contact time, and initial metal ion concentration. The hexavalent chromium uptake was dependent on equilibrium pH=6.5, being the optimum pH value. Cr(VI) elimination from aqueous solution increases with an increase in contact time, and equilibrium was attained at 150 min. Further, on increasing the adsorbent dose, there was an increase in Cr(VI) removal. The maximum adsorption of Cr(VI) (96%) was examined at 5.0 g/l of adsorbent dose. The upsurge in the initial concentration of Cr(VI) decreases the percent removal of Cr(VI). This examination proved that the newly synthesized activated carbon from the bark of Butea monosperma could be used as a cost-effective and less energy-intensive adsorbent to remove hexavalent chromium from aqueous solution and can be successfully applied for the treatment of wastewater.","PeriodicalId":199881,"journal":{"name":"American Journal of Environment and Climate","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126635600","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

Assessing the Climatic Influence on River in Bangladesh: In Perspective of Morphology and Discharge of Surma River 气候对孟加拉国河流影响的评估:基于苏尔玛河形态和流量的视角

American Journal of Environment and Climate Pub Date : 2022-05-11 DOI: 10.54536/ajec.v1i1.181

Shetu Akter, M. Howladar, Z. Ahmed, T. Chowdhury, Shah Md Shahnewaz Sayem

{"title":"Assessing the Climatic Influence on River in Bangladesh: In Perspective of Morphology and Discharge of Surma River","authors":"Shetu Akter, M. Howladar, Z. Ahmed, T. Chowdhury, Shah Md Shahnewaz Sayem","doi":"10.54536/ajec.v1i1.181","DOIUrl":"https://doi.org/10.54536/ajec.v1i1.181","url":null,"abstract":"Bangladesh is a region that is vulnerable to climate change. In this study, the influence of rainfall on river morphology and river discharges was investigated. The morphological analysis of the Surma River was carried out using GIS. Rainfall of Sylhet over 44 years(1972–2016) was analyzed. Annually 434.099 mm rainfall precipitated in Sylhet. The mean annual rainfall from 1972-to 2016 shows a little decreasing trend. 845.99 M3/s of water was discharged on average from the Surma river annually. Over these 44 years, erosion and deposition show a very decreasing rate with a very steep slope. The sinuosity index of the Surma River varies from 1.32 to 2.29. The total erosion is strongly related to annual mean rainfall (r=0.939), which greatly affects the total river erosion. 88% of erosion depends on the annual mean rainfall (r2=0.88). The r between mean annual rainfall and total deposition is 0.919, which presents a very strong positive relationship. More than 80% of the erosion can be explained by rainfall. According to the percentage of r2, about 89.8% of the variables of deposition can be explained by rainfall if other factors remain constant. The river deposition and erosion are very highly dependent on river discharge. The Surma river’s annual mean discharge and rainfall are strongly correlated (r = 0.69), which indicates that the discharge of the Surma river is highly dependent on the surrounding area’s rainfall. To conclude, it can be noted that the Sylhet rainfall decreased from 1972 to 2016, which affected the Surma river’s morphology directly due to climate change.","PeriodicalId":199881,"journal":{"name":"American Journal of Environment and Climate","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127935692","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

Seagrass Diversity and Distribution in Maribojoc Bay, Bohol, Philippines 菲律宾薄荷岛Maribojoc湾海草的多样性和分布

American Journal of Environment and Climate Pub Date : 2022-05-03 DOI: 10.54536/ajec.v1i1.217

H. J. Mascarinas, Otadoy Julie B

{"title":"Seagrass Diversity and Distribution in Maribojoc Bay, Bohol, Philippines","authors":"H. J. Mascarinas, Otadoy Julie B","doi":"10.54536/ajec.v1i1.217","DOIUrl":"https://doi.org/10.54536/ajec.v1i1.217","url":null,"abstract":"Seagrasses are major parts of coastal and marine biodiversity. Unfortunately, these aquatic plants and their ecological values are virtually unknown to many Filipinos. This study assessed the seagrasses in Maribojoc Bay, particularly in the coastal areas of the three municipalities, namely Maribojoc, Dauis, Panglao, and the City of Tagbilaran. Ecological assessments were conducted to determine the composition, abundance, distribution, percent cover, diversity, dominance, and evenness of seagrass species. Eight sampling sites were surveyed from October to December 2020. Seven seagrass species were identified, with Thalassia hemprichii as the most abundant (52.79%). There was a significant difference (p>0.05) in seagrass species relative abundance. The Shannon diversity index implies low diversity (H’=1.40) of seagrass species. High dominance (2.98) and low evenness (0.72) were attributed to the high abundance of T. hemprichii in the seagrass beds. The seagrass coverage was characterized by patchy and continuous meadows, with percentage cover ranging from 17.45% (poor) – 60% (good). Maribojoc Bay had a seagrass percentage cover of 38.65%, which can be classified under “fair” conditions. Seagrass community structure implies sparse coverage and low diversity, probably due to the deterioration of once-continuous meadows. However, further studies concerning seagrass communities are recommended in order to implement rehabilitation program or improve current management in Maribojoc Bay.","PeriodicalId":199881,"journal":{"name":"American Journal of Environment and Climate","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126400291","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