Author correction to: Structure and distribution of an unrecognized interstitium in human tissues

© 2018 The Author(s). The Supplementary Figure file that accompanies this Article contains an error in Supplementary Figure S1, where the Small Intestine CD34 panel was duplicated from the Gallbladder CD34 panel. The correct Figure S1 appears below as Figure 1. (Figure Presented)

Microscopy techniques for determining water–cement (w/c) ratio in hardened concrete: A round-robin assessment

Water to cement (w/c) ratio is usually the most important parameter specified in concrete design and is sometimes the subject of dispute when a shortfall in concrete strength or durability is an issue. However, determination of w/c ratio in hardened concrete by testing is very difficult once the concrete has set. This paper presents the results from an inter-laboratory round-robin study organised by the Applied Petrography Group to evaluate and compare microscopy methods for measuring w/c ratio in hardened concrete. Five concrete prisms with w/c ratios ranging from 0.35 to 0.55, but otherwise identical in mix design were prepared independently and distributed to 11 participating petrographic laboratories across Europe. Participants used a range of methods routine to their laboratory and these are broadly divided into visual assessment, measurement of fluorescent intensity and quantitative backscattered electron microscopy. Some participants determined w/c ratio using more than one method or operator. Consequently, 100 individual w/c ratio determinations were collected, representing the largest study of its type ever undertaken. The majority (81%) of the results are accurate to within ± 0.1 of the target mix w/c ratios, 58% come to within ± 0.05 and 37% are within ± 0.025. The study shows that microscopy-based methods are more accurate and reliable compared to the BS 1881-124 physicochemical method for determining w/c ratio. The practical significance, potential sources of errors and limitations are discussed with the view to inform future applications.Materials and Environmen

The cause and cure of speech disorders: a text book for students and teachers on stuttering, stammering and voice conditions,

Mode of access: Internet

Evidence against a charge density wave on Bi(111)

The Bi(111) surface was studied by scanning tunneling microscopy (STM), transmission electron microscopy (TEM) and angle-resolved photoemission (ARPES) in order to verify the existence of a recently proposed surface charge density wave (CDW) [Ch. R. Ast and H. Hoechst Phys. Rev. Lett. 90, 016403 (2003)]. The STM and TEM results to not support a CDW scenario at low temperatures. Furthermore, the quasiparticle interference pattern observed in STM confirms the spin-orbit split character of the surface states which prevents the formation of a CDW, even in the case of good nesting. The dispersion of the electronic states observed with ARPES agrees well with earlier findings. In particular, the Fermi contour of the electron pocket at the centre of the surface Brillouin zone is found to have a hexagonal shape. However, no gap opening or other signatures of a CDW phase transition can be found in the temperature-dependent data

FORMAT : Fortran matrix abstraction technique.

FORMAT (FORtran Matrix Abstraction Technique) is a digital computer system consisting of three distint programs written entirely in Fortran IV. The system provides for generating, manipulating, printing, and plotting of large order (i.e., 2000) matrices commonly used in state-of-the-art structural analysis techniques. The capability of maintaining and automatic editing of case data has also been provided. Phase 1 of the system automatically generates matrices for joining, symmetric/antisymmetric disconnect, vibration, and stability analyses. Modules for converting continuous-to-discrete loads, analytic-to-discrete geometry, and a master case data file editor are provided to reduce input data requirements. Phase 2 of the system provides for the manipulation of matrices. The matrix operations (e.g., add, multiply, etc.), several special matrix operations, (e.g., adjoin), and severl control operations (e.g., save matrices, conditional IF test, etc.). Phases 3 of the system provides for self-explanatory report form printing of matrices and a nominal graphical display capability, including a geometric display.Research supported by the Air Force Flight Dynamics Laboratory, Air Force Systems Command, United States Air Force, and performed by the McDonnell Douglas Corporation, Douglas Aircraft Division.AD0683262 (from http://www.dtic.mil)."December 1968."Includes bibliographical references (page 735).FORMAT (FORtran Matrix Abstraction Technique) is a digital computer system consisting of three distint programs written entirely in Fortran IV. The system provides for generating, manipulating, printing, and plotting of large order (i.e., 2000) matrices commonly used in state-of-the-art structural analysis techniques. The capability of maintaining and automatic editing of case data has also been provided. Phase 1 of the system automatically generates matrices for joining, symmetric/antisymmetric disconnect, vibration, and stability analyses. Modules for converting continuous-to-discrete loads, analytic-to-discrete geometry, and a master case data file editor are provided to reduce input data requirements. Phase 2 of the system provides for the manipulation of matrices. The matrix operations (e.g., add, multiply, etc.), several special matrix operations, (e.g., adjoin), and severl control operations (e.g., save matrices, conditional IF test, etc.). Phases 3 of the system provides for self-explanatory report form printing of matrices and a nominal graphical display capability, including a geometric display.Air Force Contract No.Mode of access: Internet

FORMAT : Fortran matrix abstraction technique.

FORMAT (FORtran Matrix Abstraction Technique) is a digital computer system consisting of three distint programs written entirely in Fortran IV. The system provides for generating, manipulating, printing, and plotting of large order (i.e., 2000) matrices commonly used in state-of-the-art structural analysis techniques. The capability of maintaining and automatic editing of case data has also been provided. Phase 1 of the system automatically generates matrices for joining, symmetric/antisymmetric disconnect, vibration, and stability analyses. Modules for converting continuous-to-discrete loads, analytic-to-discrete geometry, and a master case data file editor are provided to reduce input data requirements. Phase 2 of the system provides for the manipulation of matrices. The matrix operations (e.g., add, multiply, etc.), several special matrix operations, (e.g., adjoin), and severl control operations (e.g., save matrices, conditional IF test, etc.). Phases 3 of the system provides for self-explanatory report form printing of matrices and a nominal graphical display capability, including a geometric display.Research supported by the Air Force Flight Dynamics Laboratory, Air Force Systems Command, United States Air Force, and performed by the McDonnell Douglas Corporation, Douglas Aircraft Division.AD0683782 (from http://www.dtic.mil)."December 1968."Includes bibliographical references (page 169).FORMAT (FORtran Matrix Abstraction Technique) is a digital computer system consisting of three distint programs written entirely in Fortran IV. The system provides for generating, manipulating, printing, and plotting of large order (i.e., 2000) matrices commonly used in state-of-the-art structural analysis techniques. The capability of maintaining and automatic editing of case data has also been provided. Phase 1 of the system automatically generates matrices for joining, symmetric/antisymmetric disconnect, vibration, and stability analyses. Modules for converting continuous-to-discrete loads, analytic-to-discrete geometry, and a master case data file editor are provided to reduce input data requirements. Phase 2 of the system provides for the manipulation of matrices. The matrix operations (e.g., add, multiply, etc.), several special matrix operations, (e.g., adjoin), and severl control operations (e.g., save matrices, conditional IF test, etc.). Phases 3 of the system provides for self-explanatory report form printing of matrices and a nominal graphical display capability, including a geometric display.Air Force Contract No.Mode of access: Internet