Advances in Repurposing and Recycling of Post-Vehicle-Application Lithium-Ion Batteries

Increased electrification of vehicles has increased the use of lithium-ion batteries for energy storage, and raised the issue of what to do with post-vehicle-application batteries. Three possibilities have been identified: 1) remanufacturing for intended reuse in vehicles; 2) repurposing for non-vehicle, stationary storage applications; and 3) recycling, extracting the precious metals, chemicals and other byproducts. Advances in repurposing and recycling are presented, along with a mathematical model that forecasts the manufacturing capacity needed for remanufacturing, repurposing, and recycling. Results obtained by simulating the model show that up to a 25% reduction in the need for new batteries can be achieved through remanufacturing, that the sum of repurposing and remanufacturing capacity is approximately constant across various scenarios encouraging the sharing of resources, and that the need for recycling capacity will be significant by 2030. A repurposing demonstration shows the use of post-vehicle-application batteries to support a semi-portable recycling platform. Energy is collected from solar panels, and dispensed to electrical devices as required. Recycling may be complicated: lithium-ion batteries produced by different manufacturers contain different active materials, particularly for the cathodes. In all cases, however, the collecting foils used in the anodes are copper, and in the cathodes are aluminum. A common recycling process using relatively low acid concentrations, low temperatures, and short time periods was developed and demonstrated

The Politics of Arabic Naming And Islamization In Java: Processes of Hybridization and Purification

Arabic names are a component of a changing Islamic discourse in Java. If Arabic names in Java undergo change and growth, then this has implications for changes in Javanese Islam. This research demonstrates the validity of an approach that uses names as a window into Javanese culture. Drawing on a dataset of 3.7 million names analyzed diachronically across 100 years, and  using a quantitative method sharpened by ethnography, the analysis of names offers a new way to investigate trends that were previously often difficult to document systematically. In the past, Javanese names usually reflected social classification: santri, abangan, priyayi, or lower and upper class. However, towards the end of the twentieth century, names with class connotations were increasingly abandoned (see Kuipers and Askuri 2017). In this paper we explore further the connection between the decline of class marked names, and the rise of Arabic names. Drawing on data from Askuri (2018), we argue that although the decline of class marked names precedes the sharp rise in the use of Arabic names, the former does not seem to have caused the latter in a simple way. Our data show that in the 20th century, there were two important stages in the Arabisation of Javanese names; 1) an initial “synthetic” stage of one-word blended Javanese Arab names, popular from roughly 1930-1960; 2) a later stage, beginning in 1980, of 2 and 3 word names, one of which was a purified Arabic name . The conclusions have implications for an understanding of the role of hybridity and purification in Javanese Islamic modernity. [Nama-nama Arab merupakan salah satu komponen dari wacana Islam yang dinamis di Jawa. Jika nama-nama Arab di Jawa mengalami perubahan dan pertumbuhan, maka hal ini memiliki implikasi perubahan dalam masyarakat Islam di Jawa. Penelitian ini menunjukkan validitas pendekatan yang menggunakan nama sebagai jendela ke dalam budaya Jawa. Berdasarkan pada dataset 3,7 juta nama yang dianalisis secara diakronis sepanjang 100 tahun, dan menggunakan metode kuantitatif yang dipertajam dengan etnografi, analisis nama menawarkan cara baru untuk menyelidiki trend yang sebelumnya sering sulit untuk didokumentasikan secara sistematis.Di masa lalu, nama-nama Jawa biasanya mencerminkan klasifikasi sosial: santri, abangan, priyayi, atau kelas bawah dan atas. Namun, menjelang akhir abad ke-20, nama-nama dengan konotasi kelas semakin ditinggalkan. Dalam makalah ini kami mengeksplorasi lebih lanjut hubungan antara penurunan nama-nama yang berkonotasi kelas rendah yang ditandai dengan dan munculnya nama-nama Arab. Berdasarkan data dari Askuri (2018), kami berpendapat bahwa meskipun penurunan nama yang berkonotasi kelas rendah mendahului kenaikan yang tajam dalam penggunaan nama-nama Arab, yang pertama tampaknya tidak menyebabkan yang terakhir dengan cara yang sederhana. Data kami menunjukkan bahwa pada abad ke-20, ada dua tahapan penting dalam Arabisasi nama-nama di Jawa; 1) tahap awal “sintesis” dari nama campuran Jawa-Arab dalam satu kata, yang populer dari sekitar 1930-1960; 2) tahap selanjutnya, dimulai pada tahun 1980, yang tersusun dari 2 atau 3 kata, dimana salah satunya ialah nama Arab yang dimurnikan (purified Arabic names). Kesimpulan ini memiliki implikasi dalam pemahaman tentang peran hibriditas dan pemurnian dalam modernitas Islam di Jawa.

A comparison of endothelial and penetrating keratoplasty outcomes following failed penetrating keratoplasty: a registry study

Author version made available in accordance with publisher copyright policy.Purpose To compare graft survival and visual outcomes for endothelial keratoplasty (EK) after a first penetrating keratoplasty (PK), with outcomes of repeat PK after a first PK. Methods 400 eyes with a second graft (65 EKs, 335 PKs) performed after failure of a primary PK were identified through the Australian Corneal Graft Registry, a national prospectively followed cohort. Grafts were performed after January 2008 (follow-up of the second graft extending to 6.75 years maximum). Kaplan–Meier graft survival plots were constructed and Cox proportional hazards regression was used to identify independent risk factors for graft failure. Best-corrected Snellen visual acuity (BCVA) at last follow-up was compared with pregraft acuity. Results Poor Kaplan–Meier graft survival was observed for PK-EK compared with PK-PK (log-rank=29.66, p<0.001). Variables retained in multivariate analysis as significantly influencing survival of the second graft included graft type (PK-EK or PK-PK, p<0.001), length of survival of the previous PK (global p=0.011), graft era (global p=0.018), occurrence of rejection in the second graft (p=0.005) and a history of raised intraocular pressure at any time ( p=0.048), but not indication for the first graft. BCVA improved in the majority of surviving grafts and attainment of 6/12 vision was similar for both PK-EK and PK-PK groups. Conclusions Our registry findings suggest that repeat PK may deliver a better outcome in terms of graft survival than EK after a failed PK that was performed initially for keratoconus or pseudophakic bullous keratopathy. For surviving grafts, visual outcomes appeared equivalent across groups

A Virtual Community of Practice to Introduce Evidence-based Pedagogy in Chemical, Materials, and Biological Engineering Courses

This paper describes a model for a virtual community of practice (VCP) to support faculty efforts to adopt research-based instructional strategies in Chemical, Materials and Biological Engineering courses. The VCP was built on published recommendations for successful faculty development programs. The VCP program began with a 10 week virtual training period for five pairs of VCP leaders, during which they acquired the skills and knowledge needed to lead the faculty VCP. The faculty VCPs focused on one of five technical disciplines and were led by a pair of leaders having expertise in a specific technical focus area as well as in engineering pedagogy. Workshops were held using Internet conferencing software: the first 8 weekly workshops provided training in research-based pedagogy, and the second 8 biweekly workshops supported faculty efforts to implement chosen strategies in their courses. The participants were full-time faculty members with a range of teaching experience and pedagogical expertise, ranging from novice to expert. Improvement was measured via pre/post survey in the areas of familiarity and use of research-based pedagogy, as well as in perceived student motivation. The second part of the paper focuses on the translation of faculty participant experiences from the VCP into the classroom as they implemented a variety of instructional methods in their courses. We describe their approaches and preliminary results using different instructional methods such as flipping the classroom, using game-based pedagogy, promoting positive interdependence in cooperative-learning teams, peer instruction, small group discussion, Process Oriented Guided Inquiry Learning (POGIL), and using Bloom’s Taxonomy to structure a course

A machine learning approach to explore predictors of graft detachment following posterior lamellar keratoplasty: a nationwide registry study

Machine learning can be used to explore the complex multifactorial patterns underlying postsurgical graft detachment after endothelial corneal transplantation surgery and to evaluate the marginal effect of various practice pattern modulations. We included all posterior lamellar keratoplasty procedures recorded in the Dutch Cornea Transplant Registry from 2015 through 2018 and collected the center- specific practice patterns using a questionnaire. All available data regarding the donor, recipient, surgery, and practice pattern, were coded into 91 factors that might be associated with the occurrence of a graft detachment. In this research, we used three machine learning methods; a regularized logistic regression (lasso), classification tree analysis (CTA), and random forest classification (RFC), to select the most predictive subset of variables for graft detachment. A total of 3647 transplants were included in our analysis and the overall prevalence of graft detachment was 9.9%. In an independent test set the area under the curve for the lasso, CTA, and RFC was 0.70, 0.65, and 0.72, respectively. Identified risk factors included: a Descemet membrane endothelial keratoplasty procedure, prior graft failure, and the use of sulfur hexafluoride gas. Factors with a reduced risk included: performing combined procedures, using pre-cut donor tissue, and a pre-operative laser iridotomy. These results can help surgeons to review their practice patterns and generate hypotheses for empirical research regarding the origins of graft detachments

Effects of Anacetrapib in Patients with Atherosclerotic Vascular Disease

BACKGROUND: Patients with atherosclerotic vascular disease remain at high risk for cardiovascular events despite effective statin-based treatment of low-density lipoprotein (LDL) cholesterol levels. The inhibition of cholesteryl ester transfer protein (CETP) by anacetrapib reduces LDL cholesterol levels and increases high-density lipoprotein (HDL) cholesterol levels. However, trials of other CETP inhibitors have shown neutral or adverse effects on cardiovascular outcomes. METHODS: We conducted a randomized, double-blind, placebo-controlled trial involving 30,449 adults with atherosclerotic vascular disease who were receiving intensive atorvastatin therapy and who had a mean LDL cholesterol level of 61 mg per deciliter (1.58 mmol per liter), a mean non-HDL cholesterol level of 92 mg per deciliter (2.38 mmol per liter), and a mean HDL cholesterol level of 40 mg per deciliter (1.03 mmol per liter). The patients were assigned to receive either 100 mg of anacetrapib once daily (15,225 patients) or matching placebo (15,224 patients). The primary outcome was the first major coronary event, a composite of coronary death, myocardial infarction, or coronary revascularization. RESULTS: During the median follow-up period of 4.1 years, the primary outcome occurred in significantly fewer patients in the anacetrapib group than in the placebo group (1640 of 15,225 patients [10.8%] vs. 1803 of 15,224 patients [11.8%]; rate ratio, 0.91; 95% confidence interval, 0.85 to 0.97; P=0.004). The relative difference in risk was similar across multiple prespecified subgroups. At the trial midpoint, the mean level of HDL cholesterol was higher by 43 mg per deciliter (1.12 mmol per liter) in the anacetrapib group than in the placebo group (a relative difference of 104%), and the mean level of non-HDL cholesterol was lower by 17 mg per deciliter (0.44 mmol per liter), a relative difference of -18%. There were no significant between-group differences in the risk of death, cancer, or other serious adverse events. CONCLUSIONS: Among patients with atherosclerotic vascular disease who were receiving intensive statin therapy, the use of anacetrapib resulted in a lower incidence of major coronary events than the use of placebo. (Funded by Merck and others; Current Controlled Trials number, ISRCTN48678192 ; ClinicalTrials.gov number, NCT01252953 ; and EudraCT number, 2010-023467-18 .)

Development of a Materials for Energy Storage Course for Engineering Students

The advanced energy storage industry is a rapidly growing field. This industry is looking for engineering graduates with the skills and training to work in the area of energy storage. The School of Engineering at Grand Valley State University is developing a three-course certificate in advanced energy to address this need. The objective of the certificate is to prepare students with a sound engineering and science education which is augmented with knowledge of energy as applied to advanced energy storage for electrified vehicles and power management