www.nickalls.org/dick/

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The single biggest problem we face is that of visualisation.

Richard Feynman (1918-1988) [Math. Gaz. (1996); vol(80), 267]

Anaesthesia | Computing | Maths | Pulfrich effect | WF Daniell | Spaghetti | Darwin |

** Anaesthesia**
( handouts |
general |
workstation | )

- Notes on thoracic anaesthesia (April 2011) [revision 6a, PDF, 16.5 MB]

--- Table of contents [PDF] *Insensibility during surgical operations produced by inhalation*by HJ Bigelow (1846) [PDF]

--- see original HTML at Wood Library-Museum of Anesthesiology- Inverse solution of the Severinghaus and Thomas equations (revised 2011)

- with Mahajan R

Awareness and anaesthesia: think dose, think data [PDF]

British J Anaesthesia (2010); vol 104, p1-2. [DOI] - TeX in the operating theatre: an anaesthesia application [PDF]

TUG Conference (1998), Torun, Poland. [DOI] - with Ramasubramanian R.

*Interfacing the IBM PC to medical equipment: the art of serial communications*(Cambridge University Press, 1995)

--- ISBN: 9780521462808

--- purchase from Cambridge Univ Press, UK - with Mapleson WW

Age-related iso-MAC charts for isoflurane, sevoflurane and desflurane in man [PDF]

British J Anaesthesia (2003); vol 91, p 170-174. [DOI]

--- Printable age-related iso-MAC charts for theatre use

Isoflurane [PDF]

Sevoflurane [PDF]

Desflurane [PDF] - with Rogers ML, Brackenbury ET, Salama FD, Beattie MG and Perks AGB

Airway fire during tracheostomy: prevention strategies for surgeons and anaesthetists [PDF]

Annals Royal College of Surgeons (Eng) (2001); vol 83, p 376-380 - with Barrett DA, Adler J, Shaw PN

Microdialysis sampling in vitro: the effect on recovery of probe length, flow rate and temperature [PDF]

Pharm. Pharmacol. Lett. (1992); vol 2, 139-142 *The relationship between blood volume and salt intake (1988)*:

PhD thesis, University of Leeds, UK (Department of Cardiovascular Studies).- with Biggart M, McQuillan PJ, Choudhry AK.

Dangers of placement of narrow bore nasogastric feeding tubes [HTML]

Annals Royal College of Surgeons (Eng) (1987); vol 69, 119-121. -
with Nickalls EA

The first use of physostigmine in the treatment of atropine poisoning [PDF]

(translation of Kleinwachter's paper `Observations on the effect of Calabar bean extract as an antidote to atropine poisoning')

Anaesthesia (1988), vol 43, p 776-779 - with Nickalls EA

Physostigmine for anticholinergic poisoning [letter] [PDF]

The Lancet (1980), vol ii, p 589-590 -
with Nickalls EA

The first reversal of curare [PDF]

(translation of Pal's description (1900) of the first reversal of curare in dogs by physostigmine)

Anaesthesia (1985), vol 40, p 572-575 - A new percutaneous infraclavicular approach to the axillary vein [PDF]

Anaesthesia (1987), vol 42, p 151-154 - with Kokri MS

The width of the posterior epidural space in obstetric patients [PDF]

Anaesthesia (1986), vol 41, p 432-433 - with Thomson CW

Mouth to mask respiration; [editorial] [PDF]

British Medical Journal (1986); vol 292, p 1350 - with Dennison B

A modification of the combined spinal and epidural technique [PDF]

Anaesthesia (1984), vol 39, p 935-936 - with Lawler PG

A new venturi attachment for the Cape ventilator to facilitate control of the FIO2 [PDF]

Anaesthesia (1984), vol 39, p 1036-1037

** Computing (interfacing, TeX, LaTeX, Perl)**
(external TeX links)
(workstation project).

- with Syropoulos A

The RUBIK bundle (version 5) 2018

(LaTeX packages for typesetting Rubik 3x3x3 and 2x2x2 cube configurations and processing rotation sequences)

--- CTAN package info

--- rubikexamples [PDF]

--- rubikcube package documentation [PDF]

--- rubiktwocube package documentation [PDF]

--- rubikrotation package documentation [PDF]

--- rubikrotationPL documentation [PDF]

--- rubikpatterns package documentation [PDF]

--- rubikpatternsLIST [PDF] - RUBIK20moves [ZIP (544 KB)]

Rubik cube 20f* rotation sequences (by H Kociemba) modified for use with the LaTeX Rubik bundle - Typesetting the (Rubik's) cube
[slides PDF]
[audio+slides]

Presentation given to ukTUG meeting (Oxford, UK; Nov 9, 2013)

(some of the commands presented in this talk were modified in the subsequent LaTeX Rubik bundle---see above) - with Dales S and Nice AK

A Linux-based anaesthesia workstation [preprint: PDF]

Invited talk to:*ESCTAIC-2010*conference (Amsterdam; October 6-10, 2010)

Abstract: J Clinical Monitoring and Computing (2011); volume 25 (April), pp 29-30.

--- DOI:10.1007/s10877-011-9276-2 - with Syropoulos A (2010).

The mathsPIC graphics package

--- CTAN package info

--- manual (A4) [PDF]

--- sourcecode [HTML] - with Syropoulos A (2000)

A Perl port of the mathsPIC graphics package [PDF]

TUGboat (2000); vol 21, p 292-297 - MathsPIC: a filter program for use with PicTeX [PDF]

[MS-DOS version] TUG Conference (Heidelberg, Germany, 1999) - Accessing TeX parameter values [PDF]

Presentation given to ukTUG meeting (Oxford, UK; July 2001) - Installing a USB external hard drive backup (Linux) [PDF]
- TeX in the operating theatre: an anaesthesia application [PDF]

TUG Conference (1998), Torun, Poland. [DOI] - with Ramasubramanian R.

*Interfacing the IBM PC to medical equipment: the art of serial communications*

Cambridge University Press, 1995. --- ISBN: 9780521462808

--- purchase from Cambridge Univ Press, UK - with Syropoulos A (2003)

The Decimal LaTeX package

--- The CTAN package info

--- documentation [PDF, 9 KB]

--- CTAN directory: .../macros/latex/contrib/decimal/ - with Harders H and Palmer J (2000).

The Yplan LaTeX package

--- The CTAN package info

--- Example -- yplan2011 [PDF, 50 KB]

--- CTAN directory: .../macros/latex/contrib/yplan/ - with Syropoulos A (2006).

The ASCII font LaTeX package

--- CTAN directory: .../fonts/ascii/

--- The CTAN package info

--- ASCII font documentation [PDF]

--- ASCII.sty: A new style-option and encoded font with IBM graphics control characters for use with TeX and LaTeX (TUGboat (1994); vol 15 (2), p.43--) [PDF]

--- Font catalog entry - with J Wright (2009).

A TeX compliment-slip template

--- see example

--- ukTUG TeX templates

--- the LaTeX source code

- On the structure of polynomial roots [PDF]

The Mathematical Gazette (2021); vol 105 (July), 253--262. - The complementary cubic [PDF]

The Mathematical Gazette (2020); vol 104 (March), 155--158. - A new bound for polynomials when all the roots are real [PDF]

The Mathematical Gazette (2011); vol 95 (November), 520--526. - The quartic equation: alignment with an equivalent tetrahedron [PDF]

The Mathematical Gazette (2012); vol 96 (March), 49--55.

--- see also the Wolfram demo (by Salvador Gutierrez Martinez ) of quartic and tetrahedron alignment. - The quartic equation: invariants and Euler's solution revealed [PDF]

The Mathematical Gazette (2009); vol 93 (March), 66--75. - with Thomas Müller (2009)

Parameters for plotting a quartic

A Wolfram demo (Wolfram Demonstration Project) - Visualising the quartic and its various resolvents [PDF]

--- A demo of the dynamic relationship between the quartic, its resolvent cubic (Euler's) and the resolvent quadratic. - with Dye RH

The geometry of the discriminant of a polynomial [PDF]

The Mathematical Gazette (1996); vol 80 (July), 279--285. - Viete, Descartes and the cubic equation [PDF]

The Mathematical Gazette (2006), vol 90 (July), 203--208. - A new approach to solving the cubic: Cardan's solution revealed [PDF]

The Mathematical Gazette (1993), vol 77 (November), 354--359.

--- see also John Gamble's Perl module Math::Polynomial::Solve for solving polynomials.

--- see also the Wolfram demo for manipulating the shape and position of the cubic. - On Note 92.35 (re: solving cubics with tables) (2009) [PDF]

The Mathematical Gazette (2009); vol 93 (March), 154--156. - Solving the cubic using tables [PDF]

Theta (1996); vol 10, 21--24. - A note on solving cubics [PDF]

The Mathematical Gazette (1996), vol 80 (November), 576--577. - The quadratic formula is a particular case [PDF]

The Mathematical Gazette (2000), vol 84 (July), 276--280. - A conic theorem generalised: directed angles and applications [PDF]

The Mathematical Gazette (2000), vol 84 (July), 232--241.

--- alternative proof by Rigby (2002)

--- dynamic animation (Java) of this theorem (by Michael de Villiers using GeoGebra) - A line and conic theorem having a visual correlate [PDF]

The Mathematical Gazette (1986); vol 70 (March), 27--29. - with Dye RH

A new algorithm for generating Pythagorean triples [PDF]

The Mathematical Gazette (1998); vol 82 (March), 86--91. *Ball RS (1866)*

Note on the algebraical solution of biquadratic equations [PDF, 7.9MB]

Quarterly Journal of Pure and Applied Mathematics, volume 7 (1866) pp. 6-9, 358--369.

--- [a pdf copy of Ball's two-part quartic article]

** Vision (Pulfrich effect)**
(external links)

I first became interested in the Pulfrich effect in 1973 after going to a lecture by Dr V Reading at the Royal College of Surgeons on ``A new approach to the study of binocular depth perception'' [British Orthoptic Journal (1974); No 31, 130]. This was my first encounter with the remarkable dynamic visual phenomenon first described by Carl Pulfrich (1858-1927).

- The rotating Pulfrich effect, and a new method of determining visual latency differences [PDF]

Vision Research (1986), vol 26, 368--372.

--- doi:10.1016/0042-6989(86)90035-0

--- see animation1 (by Kazachkov) of the transition configuration described in above paper.

--- see animation2 and animation3 (by Castellanos) of the rotating effect in above paper.

--- see related theorem and Pulfrich website

--- see slide demo [PDF, 460 KB] of the `rotating' Pulfrich effect. - Pulfrich geometry (2009)

Chapter 3: The rotating Pulfrich effect: -- derivation of equations. - The influence of target angular velocity on visual latency difference determined using the rotating Pulfrich effect [PDF]

Vision Research (1996), vol 36, 2865--2872.

--- doi:10.1016/0042-6989(96)00039-9 [open access PDF with hyperlinks] - with Nakamizo S and Nawae H.

Visual latency difference determined by two 'Rotating' Pulfrich techniques [PDF]

*Swiss Journal of Psychology*(2004), vol 63, 201--205.

--- doi:10.1024/1421-0185.63.3.201 - with Nakamizo S and Nawae H.

Precision of the rotating Pulfrich technique for determining visual latency differences is significantly greater if viewing distance is varied than if angular velocity is varied

Abstract: European Conference on Visual Perception, August 1998 (Oxford, UK).

*Perception*(1998); vol 27, ECVP Abstract Supplement, p.97 [HTML] - with Kazachkov AR, Castellanos AS.

Measuring human perception and reaction time with rulers and Pulfrich pendulums

Proceedings: ICPE conference, Mexico City, Mexico; August 2011*Lat Am J Phys Educ, vol 6, Suppl 1, August 2012*[preprint 2011] [published vers 2012] - with Kazachkov AR, Vasylevska Yu.V and Kalinin VV.

Motional visual illusions on-line [PDF]

Proceedings: ICTE conference, Badajoz, Spain; November 2002

*Journal of Digital Contents*(2003); vol 1, pp 84--87

**William Freeman Daniell (1817-1865)**
(external links)

WF Daniell (English army surgeon and botanist) was instrumental in bringing Calabar beans from West Africa to pharmacologists in Edinburgh, who discovered their physostigmine content. Edinburgh physicians then went on to show that physostigmine was the first anticholinergic. Several plants have been named after Daniell.

I became interested in WF Daniell in 1979 while I was a post-fellowship SHO at Alder Hey Childrens Hospital (Liverpool). In the process of preparing a clinical case presentation relating to the use of physostigmine for the reversal of central cholinergic overdose, I became interested in the early botanical and pharmaceutical history of physostigmine, and how WF Daniell was instrumental in bringing it to the notice of pharmacologists in the 1840s.

- WF Daniell and the discovery that cola nuts contain caffeine [PDF]

The Pharmaceutical Journal (1986), vol 236, 401--402. - WF Daniell [PDF]

entry in: Dictionary of British and Irish Botanists and Horticulturists (1994), p 192. -
*William Freeman Daniell (1817-1865)*

--- draft biography (pp 97) [PDF, 438 KB]

--- bibliography only [PDF, 296 KB]

Some findings on breaking spaghetti, originally inspired by an observation by Richard Feynman :-) Note that spaghetti has now found its way into some serious scientific journals.

- The dynamics of linear spaghetti structures---or how one thing leads to another! [PDF]

(revised 2006) - with Nickalls OJ

Linear spaghetti [PDF]

*New Scientist (1995):*vol 145, 18th February, p.52 [letter]

--- online version*Science Fronteers;*No. 99 (May-June 1995) - with Nickalls OJ

Pasta puzzle: Why does spaghetti break into three pieces? [PDF]

The Last Word. In:*New Scientist (1998):*vol 160; 12 December, p.101

This "Evolution" art-work represents evolving thoughts of Charles Darwin, as reflected in the now-famous last paragraph of his *Origin of Species (1859)*. Using colours, it shows how Darwin gradually refashioned it over time---magenta representing discarded early material, and blue representing the final material. Thus we have a representation of what might be regarded as evolving text.

- Evolution of the end of Origin [PDF]

---preprint version [PDF, 59 KB];

---Published version Science (2009); vol 326, page 801;

I thought of the idea after reading Gavin de Beer's book *Evolution by natural selection (1958)*, in which he mentions that Darwin's final paragraph took different forms in different drafts. The text sources are detailed in both the preprint and the published version. It was typeset using the open-source system LaTeX.