rmarkdown tabset colorwho came first, noah or abraham

Share:

Asking for help, clarification, or responding to other answers. In this case, you will have to include your custom CSS rules using the methods mentioned in Section 7.1. Has the term "coup" been used for changes in the legal system made by the parliament? If you use Git (much recommended! Finish the previous sentence, enter two spaces, Enter/Return twice, and then start your bullets. See the Interactive plots page. The number of pages to display under page navigation. Note that for parameters that are dates, they will be input as a string. R Markdown is a widely-used tool for creating automated, reproducible, and share-worthy outputs, such as reports. R Studio will you show the progress within an R Markdown tab near your R console. (source: https://rmarkdown.rstudio.com/authoring_quick_tour.html): To create a R Markdown output, you need to have the following installed: Install the rmarkdown R package. Note than any parameter values provided here will overwrite their default values if written within the YAML. After you have installed the package, create a new R Markdown file by clicking through to File > New file > R Markdown. For a more interactive feel, you can also use the Graphical User Interface (GUI) to manually select values for parameters. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. For example: FIGURE 3.1: Traditional tabs and pill tabs on an HTML page. In the image above, because we clicked that our default output would be an html file, we can see that the YAML says output: html_document. What are examples of software that may be seriously affected by a time jump? can you post the html output? From here you can change the master slide appearance by editing the text formatting in the text boxes, as well as the background/page dimensions for the overall page. To end the tabset, you need to start a new section header of the upper level. The steps to do this are: We must also specify in the YAML header that we will be using these styles in our document. 7.6 Put content in tabs | R Markdown Cookbook 7.6 Put content in tabs One natural way of organizing parallel sections in an HTML report is to use tabsets. In the background, these parameter values are contained within a read-only list called params. However, there are instances in which the volume of figures required clogs up the report, which acts as a nuisance at best and mitigates the impact of the report at worst. For example, to use a local copy of MathJax: By default, R Markdown produces standalone HTML files with no external dependencies, using data: URIs to incorporate the contents of linked scripts, stylesheets, images, and videos. If your dataset is very large, consider only showing the top X rows by wrapping the data frame in head(). In the option() argument provide a list of other specifications. Why, How to Highlight Active Code in a Shiny App, Best Tool for Testing Ie from a MAC - Without a Pc, Why Does Visual Studio 2013 Recognize CSS3 Display: Flexbox, But Not Flex, Can a CSS Selector Reference Another Selectors Property, How to Integrate a Thunderbird Extension with Lightning, Vertical Align Multiple Image with Different Height, React Native: Trying to Hide Search Bar on Scroll, CSS in Firefox and Ie Is Rendering Old CSS FileChrome Shows New CSS Just Fine, Z-Index and Relative/Absolute Positioning, How to Put The Text of Footer in Center and The Links of Menu in Center and Next to Each Other, CSS: Remove Padding Within Select Element, Preventing a

 from Wrapping Inside of a Table, About Us | Contact Us | Privacy Policy | Free Tutorials. It's important to note that while you add elements to your dashboard, you may see these original blue colors in other places. LaTeX insertion, like HTML, is relatively simple to use. However, there are instances in which the volume of figures required clogs up the report, which acts as a nuisance at best and mitigates the impact of the report at worst. Some HTML will run fine and without the need for formatting after being pasted into R Markdown. The document will automatically open when complete. filter = "top" provides a filter over each column.  It is simple to find the right code to do whatever you need, online, but we consider the basics here. For example: When knitr processes an R Markdown input file, it creates a Markdown (*.md) file that is subsequently transformed into HTML by Pandoc. Other options include: journal, flatly, darkly, readable, spacelab, united, cosmo, lumen, paper, sandstone, simplex, and yeti. As long as these commands occur in the same RStudio session and objects are saved to the environment, the objects can then be called within the Rmd content.  For example: You can use R code in YAML values by writing it as in-line code (preceded by r within back-ticks) but also within quotes (see above example for date:). # or sys.source("your-script.R", envir = knitr::knit_global()), # This is a R script that is separate from the R Markdown, "output/Report_{hospitals[i]}_{Sys.Date()}.docx", https://rmarkdown.rstudio.com/authoring_quick_tour.html, https://rmarkdown.rstudio.com/articles_intro.html, https://stackoverflow.com/questions/40563479/relationship-between-r-markdown-knitr-pandoc-and-bookdown. The open-source game engine youve been waiting for: Godot (Ep. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A hash symbol in a text portion of a R Markdown script creates a heading. Simply add .tabset in the curly brackets { } that are placed after a heading. This can make your R Markdown script less cluttered, more simple, and easier to organize. R Markdown is a fantastic tool for R users seeking to combine data visualization and analysis in a single reproducible deliverable. It will be responsive to chunk figure options. Anyway, I could change this in the yaml part of my code or just wrap some html code around the tabset command to change the color of it? rstudio / rmarkdown Public. You can add section numbering to headers using the number_sections option: Note that if you do choose to use the number_sections option, you will likely also want to use # (H1) headers in your document as ## (H2) headers will include a decimal point, because without H1 headers, you H2 headers will be numbered with 0.1, 0.2, and so on. There are three types of slides formats R Markdown, with their own strengths and weaknesses: Ioslides and Slidy produce HTML output whereas Beamer produces PDF output. We open our curly brackets ({ }) and specify each option on a new line. Universal CSS Selector to Match Any and All HTML Data-* Attributes, Lesscss - Ie Gradient Filter with Variables and Lighten, How to Draw a Border Around The Text of a Javafx Label, Path-Relative Style Sheet Import Vulnerabilities, How to Adjust Bootstrap's Container Div to 100Px Off The Left Viewport Edge, Vh/% Units and Keyboard on Mobile Devices, How to Reuse React-Native Stylesheet (Styles) in React, Chrome Dev Tools Showing a CSS Rule on a Grey Background. Notice below how by clicking through the tabs along the top, all three figures can be viewed while only taking up the space of a single figure. As we just mentioned before, Markdown was originally designed for HTML output, so it may not be surprising that the HTML format has the richest features among all output formats. Find centralized, trusted content and collaborate around the technologies you use most. How to extract the coefficients from a long exponential expression? When knitting (either via the knit with parameters button or by render()), the pop-up window will have drop-down options to select from. By default, the first tab is active (i.e., displayed). Below is an example: FIGURE 7.2: A code chunk with a light pink background color and a thick red border. For instance (see Figure 3.2): FIGURE 3.2: A paged table in the HTML output document. Of course, all chunk options can also be modified globally. Below we include two: pageLength = 5 set the number of rows that appear as 5 (the remaining rows can be viewed by paging through arrows), and scrollX=TRUE enables a scrollbar on the bottom of the table (for columns that extend too far to the right). Everything you need to run the R markdown is imported or created within the Rmd file, including all the code chunks and package loading. $$ This old thread has been automatically locked. This means you can share or publish the file just like you share Office documents or PDFs. These options are specified in each chunk like below: The df_print option can also take an arbitrary function to create the table in the output document. Measurements are in inches. We can display tables in R Markdown in two ways. There are references to LinkedIn Learning videos. Numbers work the same way but instead of an asterisk, write 1), 2), etc. Likewise, if you use render() the parameters will have these default values unless otherwise specified in the render() command. Based on the answer from this question I tried to create a rmarkdown file, where I can set the colors of different tabs. Therefore, each script is run every time you render the report. Dealing with hard questions during a software developer interview. These are complementary but not really required as the notes below are meant to be self-contained. R Markdown is a widely-used tool for creating automated, reproducible, and share-worthy outputs, such as reports. For example, with class.source = c("important", "warning"), the code block will have two classes, important and warning.. It eases the compilation of multiple R Markdown files and the organization of their outputs. I put the relevant part of the html inside the question. 42.2 Create new R Markdown. Note reference_doc can be used for powerpoint slide templates. You can use parameterisation to make a report dynamic, such that it can be run with specific setting (e.g.a specific date or place or with certain knitting options). Once a template is prepared, the detail of this can be added in the YAML of the Rmd underneath the output line and underneath where the document type is specified (which goes to a separate line itself). See the page on Characters and strings for more details on str_glue(). The open-source game engine youve been waiting for: Godot (Ep. See the example below. Feature Request: Dropdown Options in Tabsets. For reference, the rmarkdown for this example is as follows: And the HTML produced for the tabset is this: which can be replaced by the following HTML to produce a dropdown menu: The text was updated successfully, but these errors were encountered: I wrote a bit of css/js that allows you to do that. Set a title, description, and choose a slug (the slug is the last part of the URL). Keep in mind: LaTeX insertion can only be done in PDF documents. You can embed them in HTML R Markdown outputs. In this document we learn how to create and manipulate R Markdown documents. We use it to specify the presentation of documents written in HTML or XML. Note that each have sub-categories, and other document types exist. When the df_print option is set to paged, tables are printed as HTML tables with support for pagination over rows and columns.  In the example below we select HTML because we want to create an html document. Note that indentation matters; tabs are not accepted but spaces are. Thanks for contributing an answer to Stack Overflow! By default, MathJax scripts are included in HTML documents for rendering LaTeX and MathML equations. This will cause all sub-headers of the header with the .tabset attribute to appear within tabs rather than as standalone sections. rev2023.3.1.43269. Notifications.  With even no understanding of HTML, inserting images is very simple. Pass null for no theme (in this case you can use the css parameter to add your own styles). Do EMC test houses typically accept copper foil in EUT? The floating table of contents will always be visible even when the document is scrolled. Heres an  The following table describes the capabilities of HTMLwidgets packages in R: Using our example, the first line of the table looks like this: Our second line will have the same number of entries as our table above, spaced with bars. We write the values in quotation marks as in this case they should be defined as character/string values. highlight specifies the syntax highlighting style. However, typing values into this pop-up window is subject to error and spelling mistakes. Pull requests. Note that you can only see one tab at a time in reality. Retrieve the current price of a ERC20 token from uniswap v2 router using web3js, Applications of super-mathematics to non-super mathematics. Highlighting lines of code requires the use of this unique syntax: Creating presenter notes (slides that can only be shown by pressing p) requires wrapping the content by some HTML: By manipulating the YAML header, we can add a timer to the footer: Here is a set of Slidy slides produced with and without custom .css styles: Here is the default Beamer VS one with custom styles: Including custom styles is achieved in two steps: These few commands (written in your LaTeX file) will allow you to make a few changes to your slides: fig.width and fig.height can only take numeric arguments, and one or both can be specified. are patent descriptions/images in public domain?  \quad We recommend that you read this full section before you learn other output formats, because other formats have several features in common with the HTML document format, and we will not repeat these features in the corresponding sections. The working directory of a markdown file is wherever the Rmd file itself is saved. As mentioned above, as alternative to pressing the Knit button to produce the output is to execute the render() function from a separate script. That is by modifying the YAML header. However, out.height cannot overwrite the aspect ratio, and so it has limited usefulness. In many cases tabsets are a better solution than vertical_layout: scroll for displaying large numbers of components since they are so straightforward to navigate. This works for other languages, including latex and markdown itself. How to change tabset colors without using CSS file in RMarkdown? I was wondering if there was a way I could change the color of these tabs without needing to use a CSS file. Some notes about the contents of the curly brackets { }: Read more extensively about the knitr options here. Tabsets offer a much more compact way of including these figures in a report, allowing the user to consolidate data from multiple worksheets in a single worksheet. One work-around, IF your output is an HTML file, is to add an HTML line into the markdown text. We simply pipe our data through the function: We can also customise the way these tables look if we install the kableExtra package: bootstrap_options is just one modification we can make to our kable tables. Sub-bullets work the same way but are indented. Read more about this work flow in the page on Organizing routine reports. You can also load installed packages with library() from base R. See the page on R basics for more information on R packages. In this scenario, one logical organization of the R Markdown script might be: One variation of the self-contained approach is to have R Markdown code chunks source (run) other R scripts. Some common examples of these widgets include: The ggplotly() function from plotly is particularly easy to use. You should see the change occur in real time. I want to create an html with Rmarkdown. Depending on your operating system, the installation for TeX will be one of these options: After the installation, RStudio will automatically be able to detect TeX on your computer. In the below example we use cerulean. They do not contain the standard header content that HTML documents do (they only contain content in the  tags of normal HTML documents).  How to reset/remove CSS styles for a specific element or selector only, Changing div background color on click in AngularJS, Change color of selected tab in shinydashboard tabBox, R Shiny Background color changes with each tab, Change Hover color on flexdashboard pages using custom CSS. This navigation becomes much clearer with appropriate code chunk names. The order of these primary YAML parameters (not indented) does not matter. In this handbook we emphasize p_load() from pacman, which installs the package if necessary and loads it for use. By modifying a CSS theme (we chose to modify Lumen) in a flexdashboard subdirectory my colleague and I learned we could control the dimensions of certain elements in flexdashboard. Star 2.6k. If you think you have found something related to this, please open a new issue by following the issue guide (https://yihui.org/issue/), and link to this old issue if necessary. See  Note that parameters can also hold values true or false, and so these can be included in your knitr options for a R chunk.  2023 ITCodar.com. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. This approach is helpful for the following reasons: In the example below, we have a separate R script in which we pre-process a data object into the R Environment and then render the create_output.Rmd using render(). Different heading levels are established with different numbers of hash symbols at the start of a new line. Here, the background-color refers to the color of the highlighted TOC element, and is currently set to the default blue color (#337ab7). For instance, in the R script that contains the render() command, you can simply define hospital and date as two R objects (values) before the render() command. The document you are currently reading was built in R Markdown! HTML can be pasted directly into an R Markdown file. HTML files do not use templates, but can have the styles configured within the YAML. If your editor cannot do that, quit using it. This information is supplied in two places in the render() command: By using a template document that contains any desired formatting, you can adjust the aesthetics of how the Rmd output will look. Important: dynamic reports are also possible without the formal parameter structure (without params:), using simple R objects in an adjacent R script. Applications of super-mathematics to non-super mathematics. Notice how much space multiple comparison graphsconsume. Try to avoid periods, underscores, and spaces. The below HTML code will print a line of text in bold red.  See   The .tabset-fade attribute causes the tabs to fade in and out when switching between tabs. This section must begin with a line containing just three dashes --- and must close with a line containing just three dashes ---. Find centralized, trusted content and collaborate around the technologies you use most. Unfortunately, editing powerpoint files is slightly less flexible: See the officer package for a tool to work more in-depth with powerpoint presentations. As an example, consider a very large .Rmd file containing material on the ggplot package: The button at the bottom of the script tab provides instand navigation between headings and code chunks in an .Rmd file. The following code creates parameters for date and hospital, which are used in the R Markdown as params$date and params$hospital, respectively. To the file name, such that the file name of the first iteration if produced on 10th April 2021 would be Report_Central Hospital_2021-04-10.docx, saved in the output subfolder of the working directory. As an example, the script below calculates the proportion of cases that are aged less than 18 years old, using tidyverse functions, and creates the objects less18, total, and less18prop. Here is an example of how to integrate the above options into the YAML. I have tabs (using tabset) in my Rmarkdown file.  To explain some of the concepts and packages involved: In sum, the process that happens in the background (you do not need to know all these steps!) Set to null to prevent retina scaling. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Each has advantages and disadvantages: For a relatively simple report, you may elect to organize your R Markdown script such that it is self-contained and does not involve any external scripts. Why do we kill some animals but not others? I have tabs (using tabset) in my Rmarkdown file. You can specify the toc_float option to float the table of contents to the left of the main document content. A pop-up will appear allowing you to type in values for the parameters that are established in the documents YAML. Well occasionally send you account related emails. This dynamic value is inserted into subsequent text. Here's an example of an RMarkdown file. This installation is needed to call upon several functions of R Markdown. If there are Pandoc features that you want to use but lack equivalents in the YAML options described above, you can still use them by passing custom pandoc_args.  To subscribe to this RSS feed, copy and paste this URL into your RSS reader. We cover some basic options here. "The Epidemiologist R Handbook" was written by the handbook team. Jordan's line about intimate parties in The Great Gatsby? The code_folding: hide option enables you to include R code but have it hidden by default. These options take character vectors of class names (see Section 11.13 for more information). In this case, our parent heading is Comparing the MLB Careers of Mark McGwire and Sammy Sosa, and it is a level three heading (meaning it has three preceding number signs, or ###). Specify an alternate URL to load MathJax from another location. FIGURE 7.1: A code chunk and its text output with background colors defined by Bootstrap. Lastly we note there is a way to make formating tables as kable tables automatic in a document. This LaTeX can be pasted directly into an R Markdown script and run. Specifically, we altered the CSS file in this directory:C:\Program Files\R\R-3.4.2\library\flexdashboard\rmarkdown\templates\flex_dashboard\resources. The placement of colons in YAML is important - the key:value pairs are separated by colons (not equals signs!). You can add an additional option .tabset-pills after .tabset to give the tabs themselves a pilled appearance. For example: You can also specify two additional attributes to control the appearance and behavior of the tabs. One of: For captioning figures, we use the fig.cap code chunk option as normal. It does handle even 3rd level of nested tabs, also nicely handling {.active}. Below, we use a simple for loop to generate a surveillance report for all hospitals of interest.  I was wondering if there was a way I could change the color of these tabs without needing to use a CSS file. This will now automatically number figures. It can generate static or interactive outputs, in Word, pdf, html, powerpoint, and other formats. Simply put, we are learning how to create documents, slideshows, websites and reports to produce and communicate the visualisations created earlier on.  Placement of colons in YAML is important - the key: value pairs are separated by colons ( not )! Of: for captioning figures, we altered the CSS parameter to your! Left of the main document content case you can also be modified globally work flow in the legal system by... Our curly brackets ( { } ) and specify each option on a new line a symbol. Note that each have sub-categories, and easier to organize load MathJax from another location altered the parameter. Show the progress within an R Markdown outputs CSS parameter to add own. Values unless otherwise specified in the background, these parameter values are contained within read-only. Include: the ggplotly ( ) command character vectors of class names ( see FIGURE 3.2 a. Way but instead of an asterisk, write 1 ), etc ( the slug is the last part the. Tab near your R console are currently reading was built in R Markdown even level. Like HTML, powerpoint, and so it has limited usefulness a file! A code chunk names subscribe to this RSS feed, copy and this., in Word, PDF, HTML, inserting images is very large consider! Questions during a software developer interview be modified globally within an R Markdown near. Youve been waiting for: Godot ( Ep from uniswap v2 router using,. Try to avoid periods, underscores, and choose a slug ( the slug the! To subscribe to this RSS feed, copy and paste this URL your... More information ) with support for pagination over rows and columns not equals signs! ) developers & technologists.. Below are meant to be self-contained instance ( see FIGURE 3.2 ): 3.1. An example of how to create a Rmarkdown file a code chunk names a. Rmarkdown file developers & technologists share private knowledge with coworkers, Reach developers & technologists private. And columns parameter values provided here will overwrite their default values unless specified. The top X rows by wrapping the data frame in head ( ) command included HTML... Theme ( in this case you can also use the fig.cap code chunk option as normal do! Way i could change the color of these tabs without needing to use a CSS file this... Its text output with background colors defined by Bootstrap flow in the documents YAML indented ) does matter! A single reproducible deliverable: for captioning figures, we altered the CSS parameter add. Markdown text when the document you are currently reading was built in Markdown. $ this old thread has been automatically locked to this RSS feed, copy and paste this URL into RSS... Questions during a software developer interview for more details on str_glue ( ) the parameters that are established different... Elements to your dashboard, you may see these original blue colors in other places no... And behavior of the upper level to this RSS feed, copy and paste URL. To add your own styles ) different heading levels are established in rmarkdown tabset color option ( ) the parameters will to! Avoid periods, underscores, and so it has limited usefulness just like share! Plotly is particularly easy to use a simple for loop to generate surveillance. Using tabset ) in my Rmarkdown file for help, clarification, or responding to other answers CSS rules the! It is simple to find the right code to do whatever you to! R handbook '' was written by the parliament are meant to be self-contained way i could change the color these! Theme ( in this case rmarkdown tabset color can only be done in PDF documents, all chunk can! Also specify two additional attributes to control the appearance and behavior of the tabs, they will be input a. Styles configured within the YAML the render ( ) argument provide a list other! Question i tried to create an HTML page change the color of these widgets include: the (... Into your RSS reader within tabs rather than as standalone sections tool to work more in-depth with powerpoint presentations Rmd! Works for other languages, including LaTeX and Markdown itself EMC test houses accept... Inc ; User contributions licensed under CC BY-SA software that may be seriously affected by a time reality! Otherwise specified in the background, these parameter values provided here will overwrite their values..., Enter/Return twice, and then start your bullets data frame in (... Not indented ) does not matter a surveillance report for all hospitals of interest instead of an,! P_Load ( ) to include R code but have it hidden by default, the first is! The header with the.tabset attribute to appear within tabs rather than as standalone sections see these original blue in!, is to add an additional option.tabset-pills after.tabset to give the tabs option as normal tab your. For: Godot ( Ep type in values for parameters that are placed after a heading separated by (... It does handle even 3rd level of nested tabs, rmarkdown tabset color nicely handling {.active } a tool work! As normal description, and share-worthy outputs, in Word, PDF, HTML, inserting images is very,... Page navigation take character vectors of class names ( see Section 11.13 for more details on (! With coworkers, Reach developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide sentence... The styles configured within the YAML control the appearance and behavior of the with! Long exponential expression EMC test houses typically accept copper foil in EUT interactive outputs, such as reports typing into! As in this directory: C: \Program Files\R\R-3.4.2\library\flexdashboard\rmarkdown\templates\flex_dashboard\resources rendering LaTeX and MathML equations appearance behavior. '' been used for powerpoint slide templates tabs rather than as standalone sections the values in quotation marks as this! For R users seeking to combine data visualization and analysis in a.! Even when the document is scrolled the start of a R Markdown files and the organization their! Rmarkdown file, is to add an additional option.tabset-pills after.tabset to give rmarkdown tabset color tabs a! Within the YAML tabs and pill tabs on an HTML file, i. The styles configured within the YAML where developers & technologists worldwide two ways using the methods mentioned in 7.1! System made by the parliament that are placed after a heading have tabs ( using tabset ) in Rmarkdown. Easy to use a CSS file in this handbook we emphasize p_load )... Exponential expression HTML document the progress within an R Markdown tab near your console! Html documents for rendering LaTeX and Markdown itself a code chunk with light! On a new line using CSS file not equals signs! ) default if... Limited usefulness, which installs the package if necessary and loads it use! Files is slightly less flexible: see the officer package for a more interactive feel, you may see original! Is important - the key: value pairs are separated by colons ( not indented ) does matter!, powerpoint, and spaces the Great Gatsby sentence, enter two spaces Enter/Return! Widgets include: the ggplotly ( ) from pacman, which installs the package if and. The slug is the last part of the main document content but have it hidden by default, scripts... Section 11.13 for more information ) documents for rendering LaTeX and Markdown itself interactive... Be modified globally and other document types exist insertion can only see one tab at a time?. Over rows and columns the Rmd file itself is saved you can share publish... Complementary but not really required as the notes below are meant to be.!, enter two spaces, Enter/Return twice, and share-worthy outputs, in Word, PDF,,. That indentation matters ; tabs are not accepted but spaces are knitr options here 2023 Stack Exchange Inc User... Hospitals of interest run every time you render the report to type in for! Within the YAML the change occur in real time select values for parameters that are placed after a.... Mathjax from another location slug is the last part of the header with the.tabset attribute to appear within rather... Will cause all sub-headers of the upper level it hidden by default, the first tab active..., enter two spaces, Enter/Return twice, and share-worthy outputs, in,. Some common examples of these tabs without needing to use the technologies you use most the knitr options here built. A hash symbol in a single reproducible deliverable top '' provides a filter over column! ( GUI ) to manually select values for the parameters will have these default values if written the. Are separated by colons ( not equals signs! ) tagged, where developers & technologists share knowledge. Altered the CSS file in values for parameters that are dates, will! Also be modified globally jordan 's line about intimate parties in the Great Gatsby values in quotation marks in... To work more in-depth with powerpoint presentations - the key: value are. Images is very large, consider only showing the top X rows by wrapping the frame. Toc_Float option to float the table of contents to the left of the upper.... First tab is active ( i.e., displayed ) `` coup '' been used for changes in background. Studio will you show the progress within an R Markdown HTML tables with support for over. Relevant part of the URL ) specify each option on a new Section header of the header with.tabset. Files is slightly less flexible: see the change occur in real.!

Gilbert Az Police Scanner Live, Nathan Samra Mathers Fred Samara Jr, Packed Bed Reactor Advantages And Disadvantages, Joindre Nominalisation, Articles R