Journal of Purdue Undergraduate Research最新文献_第4页

Alumni Spotlight: Jordyn (McCord) Wintczak 校友焦点:Jordyn (McCord) Wintczak

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1598

引用次数: 0

Agricultural Aerosols: The Impact of Farming Activity on Ice Nucleating Particles 农业气溶胶:农业活动对冰成核粒子的影响

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1570

Joseph K. Robinson

{"title":"Agricultural Aerosols: The Impact of Farming Activity on Ice Nucleating Particles","authors":"Joseph K. Robinson","doi":"10.7771/2158-4052.1570","DOIUrl":"https://doi.org/10.7771/2158-4052.1570","url":null,"abstract":"Farming activities cause particles such as soil dust and plant material to be emitted into the air. Some of these aerosols can become ice nucleating particles (INPs), serving as seeds for ice and mixed- phase clouds. While there have been ground- based studies of these particles in the western Great Plains and a single air- based study in Indiana, there is a distinct lack of ground- based studies in the Midwest. In Indiana, over two- thirds of the state is farmland, with over 75% of land in Tippecanoe County used for agriculture. Despite farming being such an essential part of life in Indiana, the connection between agricultural activities and INP concentrations in the area has not been explored. Using fi eld observations taken at the Purdue Agronomy Center for Research and Education (ACRE), we hope to study the impact of harvesting on INP concentrations in the midwestern United States. Th e fi eld experiment took place from May to December 2021 at the ACRE site, but this study focuses on three days during the harvesting period. Data was collected via two instruments: the SPectrometer for Ice Nuclei (SPIN) and the Cloud Condensation Nuclei Counter (CCNC). It appears there is an increase in INP concentrations on days when harvesting occurs, most likely due to an increase in organic and biological particles. It is hoped that the data from this project will provide further insight into the composition and number concentrations of INPs from harvesting through ground- based fi eld observations, as well as insight into INP concentration in the rural Midwest and its climatic impacts.","PeriodicalId":30386,"journal":{"name":"Journal of Purdue Undergraduate Research","volume":"89 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80259057","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

Applying the Byronic Model to the International Volunteers of the Spanish Nationalists (1936–1939) 拜伦模式在西班牙民族主义国际志愿军中的应用(1936-1939)

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1567

Nathan Au

引用次数: 0

Alumni Spotlight: Hyesoo Chae 校友焦点:蔡惠秀

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1594

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The Design and Manufacturing of an Environmental Chamber to Test Microelectronic Devices 微电子器件环境试验箱的设计与制造

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1571

W. Graber, Aniket Chowdhury

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Processing of Plastic Film from Potato Starch: Effect of Drying Methods 马铃薯淀粉塑料薄膜的加工:干燥方法的影响

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1532

Kourtney Collier, Samantha Goins, Austin Chirgwin, Isabelle Stanfield

{"title":"Processing of Plastic Film from Potato Starch: Effect of Drying Methods","authors":"Kourtney Collier, Samantha Goins, Austin Chirgwin, Isabelle Stanfield","doi":"10.7771/2158-4052.1532","DOIUrl":"https://doi.org/10.7771/2158-4052.1532","url":null,"abstract":"Starch- based plastics are biodegradable, compostable compounds made of starch and plasticizers from natural sources. Th eir fabrication involves the starch- plasticizer reaction at 70–100°C followed by cooling and drying. Th e most common drying method is air drying (natural convection), which is eff ective but slow. Th e objective of this work is to study the eff ect of fast drying (forced convection) on the quality of the plastic fi lm. Th is work compares the eff ects of drying conditions and drying rate on warpage, shrinkage rate, and presence of bubbles. Five drying methods are studied: (1) natural convection with uncovered petri dish, (2) natural convection while hanging, (3) forced convection with covered petri dish, (4) forced convection with uncovered petri dish, and (5) hybrid natural and forced convection. A standardized composition of starch- based plastic is prepared. Samples of 20 g of plastic deposited on 10- cm- diameter petri dishes are prepared. Drying and shrinkage rates are determined by recording the mass and diameter at multiple time intervals. A digital microscope is used to observe air bubbles. Th e most favorable drying method was forced convection with a covered petri dish, which displayed a drying rate of 0.765 g/h, no signifi cant shrinkage rate (< 0.00 mm/h), no warping, and almost no bubbles.","PeriodicalId":30386,"journal":{"name":"Journal of Purdue Undergraduate Research","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84303945","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

Modeling Airport Catchment Areas: Using Spatial Analysis Approach 机场集水区建模:使用空间分析方法

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1560

Sitong Chen

引用次数: 0

The Presence of Microcystin in the Northwest Indiana Watershed 印第安纳州西北部流域微囊藻毒素的存在

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1528

Breeann Mild

引用次数: 0

Assessing Availability and Effectiveness of Pharmacy Spanish Interpreter Services: A Systematic Review 评估药房西班牙语翻译服务的可用性和有效性:系统回顾

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1524

Ma. Emmanuelle R Domingo

引用次数: 0

Ethics in Engineering Education: Is ABET Enough? 工程教育中的伦理学:ABET是否足够?

Journal of Purdue Undergraduate Research Pub Date : 2022-11-01 DOI: 10.7771/2158-4052.1555

Alyssa DeLouise

{"title":"Ethics in Engineering Education: Is ABET Enough?","authors":"Alyssa DeLouise","doi":"10.7771/2158-4052.1555","DOIUrl":"https://doi.org/10.7771/2158-4052.1555","url":null,"abstract":"ABET is an organization that accredits college or university programs in STEM and provides quality assurance that a program meets the standards of the field or profession. According to current scholarship, there is concern that ABET accreditation has a negative impact on the transparency of syllabi and student engagement in engineering ethics. This study was designed to understand more about the relationship between ABET accreditation, syllabi design, and engineering ethics by assessing 22 syllabi from an R1 institution’s electrical and computer engineering department. These syllabi were analyzed to understand where they fall in the students’ degree path, learning outcomes, assessment processes, and whether or not they explicitly mentioned ABET. Most notably from this study, 41% of syllabi mentioned ethics, while 23% of syllabi mentioned ABET requirements. Of those that mentioned ABET, two courses were core courses and three were upper-level electives, with only one of the five syllabi mentioning ethics. These findings suggest that when ethics is prioritized in the course, ABET is not made apparent as a goal. When ABET is explicitly mentioned, it is unlikely to see ethics prioritized as well in the course. This is consistent with current scholarship that ethics is treated problematically as an add-on to courses. Future course design should focus on not just technical aspects, but also ethics and transparency around designed course outcomes and assessment. This study’s limitations include a small sample size, and possible selection bias, given that faculty voluntarily chose to participate in this study. Future research involving a larger sample and mixed methods is needed to better understand the relationship between course objectives, ABET, and ethics across engineering.","PeriodicalId":30386,"journal":{"name":"Journal of Purdue Undergraduate Research","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75137044","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