This is the Fibre Channel Card for the Mac Pro. This is an optional card for interfacing to an Xserve Server. Apple Part #: 661-5006, 661-5007. For the pre-Mac OS X operating system for Macs, see Classic Mac OS. The Classic Environment, usually referred to as Classic, is a hardware and software abstraction layer in PowerPC versions of Mac OS X that allows most legacy applications compatible with Mac OS 9 to run on Mac OS X. Trashing Files: Part 1 (Mac OS) Most operating systems provide support for sending files to the 'trash can' (or sometimes 'recycle bin'). Inspired by a python project called 'send2trash', I thought Factor should have a similar cross-platform library for trashing files.
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R 4.0.5 'Shake and Throw' released on 2021/03/31
Please check the SHA1 checksum of the downloaded image to ensure that it has not been tampered with or corrupted during the mirroring process. For example type
openssl sha1 R-4.0.5.pkg
in the Terminal application to print the SHA1 checksum for the R-4.0.5.pkg image. On Mac OS X 10.7 and later you can also validate the signature using
pkgutil --check-signature R-4.0.5.pkg
Latest release:
R-4.0.5.pkg (notarized and signed) SHA1-hash: 2f683b3c10f1a9aad927236636abef02285b6132 (ca. 85MB) | R 4.0.5 binary for macOS 10.13 (High Sierra) and higher, signed and notarized package. Contains R 4.0.5 framework, R.app GUI 1.74 in 64-bit for Intel Macs, Tcl/Tk 8.6.6 X11 libraries and Texinfo 6.7. The latter two components are optional and can be ommitted when choosing 'custom install', they are only needed if you want to use the tcltk R package or build package documentation from sources. Note: the use of X11 (including tcltk) requires XQuartz to be installed since it is no longer part of OS X. Always re-install XQuartz when upgrading your macOS to a new major version. Also please do not install beta versions of XQuartz (even if offered). This release supports Intel Macs, but it is also known to work using Rosetta2 on M1-based Macs. Native Apple silicon binary is expected for R 4.1.0 if support for Fortran sabilizes, for experimental builds and updates see mac.R-project.org. Important: this release uses Xcode 12.4 and GNU Fortran 8.2. If you wish to compile R packages from sources, you will need to download GNU Fortran 8.2 - see the tools directory. |
NEWS (for Mac GUI) | News features and changes in the R.app Mac GUI |
Mac-GUI-1.74.tar.gz SHA1-hash: 2c791fd1fd2d8f90b0887c1f9541882200a6eab8 | Sources for the R.app GUI 1.74 for Mac OS X. This file is only needed if you want to join the development of the GUI, it is not intended for regular users. Read the INSTALL file for further instructions. |
Note: Previous R versions for El Capitan can be found in the el-capitan/base directory.Binaries for legacy OS X systems: | |
R-3.6.3.nn.pkg (signed) SHA1-hash: c462c9b1f9b45d778f05b8d9aa25a9123b3557c4 (ca. 77MB) | R 3.6.3 binary for OS X 10.11 (El Capitan) and higher, signed package. Contains R 3.6.3 framework, R.app GUI 1.70 in 64-bit for Intel Macs, Tcl/Tk 8.6.6 X11 libraries and Texinfo 5.2. The latter two components are optional and can be ommitted when choosing 'custom install', they are only needed if you want to use the tcltk R package or build package documentation from sources. |
R-3.3.3.pkg MD5-hash: 893ba010f303e666e19f86e4800f1fbf SHA1-hash: 5ae71b000b15805f95f38c08c45972d51ce3d027 (ca. 71MB) | R 3.3.3 binary for Mac OS X 10.9 (Mavericks) and higher, signed package. Contains R 3.3.3 framework, R.app GUI 1.69 in 64-bit for Intel Macs, Tcl/Tk 8.6.0 X11 libraries and Texinfo 5.2. The latter two components are optional and can be ommitted when choosing 'custom install', it is only needed if you want to use the tcltk R package or build package documentation from sources. Note: the use of X11 (including tcltk) requires XQuartz to be installed since it is no longer part of OS X. Run fry, run! mac os. Always re-install XQuartz when upgrading your OS X to a new major version. |
R-3.2.1-snowleopard.pkg MD5-hash: 58fe9d01314d9cb75ff80ccfb914fd65 SHA1-hash: be6e91db12bac22a324f0cb51c7efa9063ece0d0 (ca. 68MB) | R 3.2.1 legacy binary for Mac OS X 10.6 (Snow Leopard) - 10.8 (Mountain Lion), signed package. Contains R 3.2.1 framework, R.app GUI 1.66 in 64-bit for Intel Macs. This package contains the R framework, 64-bit GUI (R.app), Tcl/Tk 8.6.0 X11 libraries and Texinfop 5.2. GNU Fortran is NOT included (needed if you want to compile packages from sources that contain FORTRAN code) please see the tools directory. NOTE: the binary support for OS X before Mavericks is being phased out, we do not expect further releases! |
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tools | Additional tools necessary for building R for Mac OS X: Universal GNU Fortran compiler for Mac OS X (see R for Mac tools page for details). |
base | Binaries of R builds for macOS 10.13 or higher (High Sierra) |
contrib | Binaries of package builds for macOS 10.13 or higher (High Sierra) |
el-capitan | Binaries of package builds for OS X 10.11 or higher (El Capitan build) |
mavericks | Binaries of package builds for Mac OS X 10.9 or higher (Mavericks build) |
old | Previously released R versions for Mac OS X |
You may also want to read the R FAQ and R for Mac OS X FAQ. For discussion of Mac-related topics and reporting Mac-specific bugs, please use the R-SIG-Mac mailing list.
Information, tools and most recent daily builds of the R GUI, R-patched and R-devel can be found at http://mac.R-project.org/. Please visit that page especially during beta stages to help us test the Mac OS X binaries before final release!
Package maintainers should visit CRAN check summary page to see whether their package is compatible with the current build of R for Mac OS X.
Binary libraries for dependencies not present here are available from http://mac.R-project.org/libs and corresponding sources at http://mac.R-project.org/src.
Last modified: 2021/03/31, by Simon Urbanek
The Arctic has long proven to be a barometer of the health of our planet. This remote part of the world faces unprecedented environmental assaults, as climate change and industrial chemicals threaten a way of life for Inuit and other Indigenous and northern communities that rely heavily on seafood and marine mammals for food.
But who would have imagined that the clothes we wear might add to this onslaught? Evidence increasingly shows that tiny synthetic fibres are permeating the Arctic Ocean and finding their way into zooplankton, fish, seabirds and marine mammals.
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In a new study published in Nature Communications, my colleagues and I find a stark confirmation that microplastics are found throughout the Arctic Ocean from Europe to the North Pole and the North American Arctic. Their presence raises concerns that textiles, laundry and municipal wastewater may be an important source of these emerging pollutants.
Extensive Arctic sampling and in-depth analysis
Our research was led by a a team at Ocean Wise Conservation Association in Vancouver, and supported by field teams from Fisheries and Oceans Canada. We collected seawater samples from just below the surface of the Arctic Ocean as part of four scientific expeditions stretching from Tromsø, Norway, to the Beaufort Sea in North America.
A total of 71 near-surface samples were collected across the Arctic. We also collected 26 samples from the Beaufort Sea from just below the surface down to a depth of 1,015 metres. We then filtered and analyzed the samples back at the Ocean Wise Plastics Lab using microscopes and spectroscopy to identify plastic polymers.
Read more: Microplastic pollution is everywhere, but scientists are still learning how it harms wildlife
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Microplastics are particles less than five millimetres long. We found an average of 49 microplastic particles per cubic meter of seawater throughout the Arctic, illustrating just how widespread synthetic plastic pollution has become in this remote region. This is lower than concentrations found in more urbanized regions in the South, but approaching levels found in the open Pacific and Atlantic Oceans.
Of these, 92 per cent were fibres, averaging 14 microns (0.014 mm) thick and 1,100 microns (1.1 mm) long. We documented every colour imaginable: red, blue, yellow, green…. But perhaps the most striking finding in the lab was that 73 per cent of these fibres were polyester.
Tracking the source of mystery fibres
Our research expedition covered more than 20,000 kilometres and provided clues as to the origins of these fibres. Cry - cryptids plea mac os. Their widespread distribution points to sources outside the Arctic, rather than local ones.
We found that fibres in the eastern Arctic were three times more abundant in the eastern Arctic than the west. They were also 50 per cent longer in the east, and their infrared signature more closely resembled commercial polyester.
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All this evidence suggests most of these fibres entered the Arctic Ocean from the Atlantic Ocean. Oceanographic features provide a supporting explanation for these observations, with approximately nine times more water entering the Arctic Ocean from the Atlantic than the Pacific.
Read more: Arctic Ocean: climate change is flooding the remote north with light – and new species
The size, shape, colours and polymer identity of the majority of these particles provide additional indications of their origins. These physical characteristics closely resembled what we encountered in our 2018 study of microplastics in the largest domestic wastewater treatment plant in Vancouver.
The size and shape of these fibres also closely mirrored those observed in laundry effluent, and builds on a series of studies showcasing the vulnerability of textiles to shedding during home laundry. In fact, we recently estimated that the average Canadian or U.S. household releases over 500 million fibres per year from laundry. This adds up to 3.5 quadrillion fibres weighing 878 tonnes from these two countries alone.
Not all textiles shed equally
The weight of evidence points to something most of us could not even imagine: that washing our clothes is contributing to the widespread contamination of the world's oceans with microfibers — both synthetic and natural. There is a glimmer of hope, though, as we see many textile design, manufacture and retail firms steeping onto the sustainability path.
In launching our Microfibre Partnership — now supported by organizations in Canada, the United States and Europe, including MEC, Patagonia, REI, Arc'teryx, the Outdoor Industry Association, Joe Fresh, Aritzia, Cotton Inc., McLean Foundation, Laudes Foundation, MetroVancouver and Environment and Climate Change Canada, we have discovered that not all textiles shed equally. In fact, an 800-fold difference between low and high fibre shedding material points to a significant opportunity for more sustainable clothing design.
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And there is much more opportunity for positive momentum, with governments working around the world on a legislative agenda for plastics. Canada launched the Ocean Plastics Charter at the G7 in 2018.
Consumers and homeowners are stepping up, too, as the world increasingly embraces a closed-loop economy for plastics, where items are reused or recycled instead of thrown away. In the case of laundry, one can install a lint trap that reduces fibre release from washing machines by up to 95 per cent.
There is much bad news about the environment these days, but our report about microplastics in the Arctic can help us chart a clear set of solution-oriented opportunities for the public, for governments and for the private sector.