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is not yet present. The // classes are added to so styling immediately reflects the current // toolbar state. The classes are removed after the toolbar completes // initialization. const classesToAdd = ['toolbar-loading', 'toolbar-anti-flicker']; if (toolbarState) { const { orientation, hasActiveTab, isFixed, activeTray, activeTabId, isOriented, userButtonMinWidth } = toolbarState; classesToAdd.push( orientation ? `toolbar-` + orientation + `` : 'toolbar-horizontal', ); if (hasActiveTab !== false) { classesToAdd.push('toolbar-tray-open'); } if (isFixed) { classesToAdd.push('toolbar-fixed'); } if (isOriented) { classesToAdd.push('toolbar-oriented'); } if (activeTray) { // These styles are added so the active tab/tray styles are present // immediately instead of "flickering" on as the toolbar initializes. In // instances where a tray is lazy loaded, these styles facilitate the // lazy loaded tray appearing gracefully and without reflow. const styleContent = ` .toolbar-loading #` + activeTabId + ` { background-image: linear-gradient(rgba(255, 255, 255, 0.25) 20%, transparent 200%); } .toolbar-loading #` + activeTabId + `-tray { display: block; box-shadow: -1px 0 5px 2px rgb(0 0 0 / 33%); border-right: 1px solid #aaa; background-color: #f5f5f5; z-index: 0; } .toolbar-loading.toolbar-vertical.toolbar-tray-open #` + activeTabId + `-tray { width: 15rem; height: 100vh; } .toolbar-loading.toolbar-horizontal :not(#` + activeTray + `) > .toolbar-lining {opacity: 0}`; const style = document.createElement('style'); style.textContent = styleContent; style.setAttribute('data-toolbar-anti-flicker-loading', true); document.querySelector('head').appendChild(style); if (userButtonMinWidth) { const userButtonStyle = document.createElement('style'); userButtonStyle.textContent = `#toolbar-item-user {min-width: ` + userButtonMinWidth +`px;}` document.querySelector('head').appendChild(userButtonStyle); } } } document.querySelector('html').classList.add(...classesToAdd); })(); Conducting a chemical orchestra - News & Stories | 黄大仙高手论坛

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Calvin News

Conducting a chemical orchestra

Wed, Jun 20, 2018
Connor Bechler

笔谤辞蹿别蝉蝉辞谤听Douglas Vander Griend of the聽chemistry and biochemistry department plans to conduct a symphony this summer, with the assistance of two student researchers and Calvin鈥檚 new supercomputer. Or at least, that鈥檚 how he invites those not well-versed in technical chemistry to understand his current work building a chemometric website for the modeling of complex chemical solutions.

The website software takes the spectrographic鈥攐r light鈥攐utput of an experiment and tries to match it against a multitude of simulated experiments. When a similar simulated output is found, the software then shows the researcher what chemical interactions may have produced that output.

鈥淚magine that you鈥檙e in a concert hall, and you鈥檙e listening to instrumentalists play on a stage, but the curtain is drawn so you can鈥檛 see anything, and everybody鈥檚 playing instruments you鈥檝e never heard before,鈥 Vander Griend said. 鈥淪o you can hear what they produce, and your job is with your ears to figure out how many instrumentalists are on stage and what type of instruments each one is playing.

鈥淲e do almost the exact same thing with molecules and light,鈥 he added, 鈥渨e make them play a song.鈥

Harmonizing distinct disciplines

Aiding him in conducting this obscure orchestra are student researchers Joyce Chew and Nathanael Kazmierczak. Chew is a junior majoring in math, and minoring in computer science and chemistry, while Kazmierczak is a senior majoring in music and chemistry, and minoring in ministry leadership.

Vander Griend points to both students鈥 backgrounds in multiple disciplines as a strength: 鈥淲hen someone can bring in a mindset and toolbox developed in a different area, they bring fresh insight into new problems.鈥

Both are thrilled with the interdisciplinary nature of the project. 鈥淚 really like that this [research] integrates math, computer science, and chemistry, because those are my core three interests,鈥 said Chew.

Kazmierczak views this kind of research as unique to Calvin: 鈥渁s a liberal arts institution, Calvin has really open lines of communication between the disciplines;鈥 he added, 鈥渢here鈥檚 a lot of collaboration work going on in the sciences.鈥

In addition to being able to work within multiple fields, both also enjoy working with Vander Griend. Having done research with him for over two years, Kazmierczak identified his attitude as 鈥渁 hands off one, which really helps you develop as an independent scientist.鈥 Chew agreed; although this is her first time doing chemistry research, she said 鈥渉e made it really easy for me to jump in, get into the literature, and get caught up with what was happening in his lab.鈥

Cutting-edge tools

Vander Griend鈥檚 ensemble is completed by . Access to the supercomputer, according to Vander Griend, is 鈥渆xpanding out the functionality鈥 of the software, allowing for the automation of model construction, the building of a database for results, and extensive error analysis.

Vander Griend identified the error analysis specifically as one of the super computer鈥檚 key contributions to the project: 鈥測ou鈥檙e talking hours and hours and hours [of computations]; the supercomputer can bring that down minutes.鈥