23 research outputs found

    The synthesis of monodisperse alkanes with long chains

    No full text
    This thesis discusses reasons for the interest in monodisperse long chain alkanes and describes attempts, past and present, to synthesise such molecules. Chapter 1 discusses why the synthesis of such molecules are important and the objectives of this project. Chapter 2 reviews the methods previous groups have devised to prepare pure samples of long chain alkanes. In particular, work carried out by Whiting et al. at Bristol, whose scheme formed the basis of the early work in Durham. Chapter 3 describes the work in Durham and improvements which were made to Whiting's method, allowing the synthesis of longer chain lengths and greater quantities of materials to be achieved. Chapter 4 provides a summary of the practical work carried out by the author. Chapter 5 gives experimental details of the work described in Chapter 4

    The effect of intra-operative passive movement therapy on non-surgical site pain after breast reconstructive surgery: a preliminary study

    No full text
    Pain distant to an operative site is under-reported but sometimes more severe than pain from the surgical site. Intra-operative passive movement could possibly reduce this pain. This preliminary study was designed to assess the practicalities of conducting a randomised controlled trial of this therapy in anaesthetised patients. The study design was pragmatic. Forty-two patients undergoing breast reconstruction were randomly assigned to receive either intra-operative passive movement or standard care. Twenty-four hours after surgery, median (IQR [range]) morphine consumption was 33 (11-42 [0-176]) mg in the passive movement group compared with 74 (15-118 [0-238]) mg with standard care (p = 0.126), while participants reported median (IQR [range]) visual analogue scores in areas distant from the surgical site of 0 (0-4 [0-34]) mm in the passive movement group compared with 10 (2-30 [0-57]) mm in those receiving standard care (p = 0.002). A full trial of intra-operative passive movement therapy to reduce postoperative is feasible and warranted

    An IT strategic decision-making framework in the midst of disruptive technologies

    No full text
    Thesis (PhD (Informatics))--University of Pretoria, 2020.Technological disruption enabled by the internet revolution has resulted in an exponential increase in the growth of new technologies and resultant technology disruptions in the workplace. Many firms do not grasp the new technology trends early enough to improve business processes and capitalise on these emerging technologies. Over the last five years, there has been exponential growth of technologies in the consumer space, mainly in social, mobile, collaboration, big data and cloud-computing technologies. As these technologies mature and gain momentum, they change the context in which businesses compete and the nature of competition, resulting in the blurring of the lines between digital and traditional business models across industries. Disruptive technologies are changing the rules of competition. The rate of change in technology in the traditional enterprise space has been relatively slow in comparison. Most chief information officers (CIOs) agree that there could be significant value in utilising new technology in creating a competitive advantage in an agile world; however, in practice the adoption and implementation of newer technology occur relatively slowly. Previous information technology (IT) research predominantly focussed on IT selection, IT risk and governance, user acceptance of technologies and IT investment criteria. However, there is very little research on factors influencing strategic IT decisions from a perspective of disruptive technologies. Business executives would generally invest in IT initiatives that can generate a return on their investment, grow their business and maintain or create a sustainable competitive advantage, but organisations are often hesitant to investment in disruptive technologies in agile business conditions. The objective of this study was to investigate critical factors that guide strategic IT decisionmaking in an agile business context. This research explored relevant literature on disruptive technologies, disruptive organisations, approaches to IT decision-making, expectations of CIOs and enterprise architects in a disruptive context. During literature reviews, various factors were identified that had an influence on strategic IT decision-making in organisations. These factors were tested with experienced IT executives who made or influenced strategic IT decisions, comprising CIOs, enterprise architects, business executives and IT consultants from organisations across industries. Some of the participants were based internationally or had gained extensive experience in IT while working for global organisations. The outcome of the data collection resulted in two contributions to the information systems discipline. The main research contribution is a framework for strategic IT decision-making (FIT framework) and a step-by-step guide on how this can used by IT decision makers in a disruptive context. The second research contribution is the BIDD model (business IT, internal IT, digital IT and digital business), which can be used to classify IT systems based on their functional purpose in organisations. The use of the FIT framework and the BIDD model provides CIOs with a comprehensive guideline to make strategic IT decisions in the midst of disruptive technologies.InformaticsPhD (Informatics)Unrestricte

    Multi-candidate immunohistochemical markers to assess radiation response and prognosis in prostate cancer: results from the CHHiP trial of radiotherapy fractionation.

    No full text
    BACKGROUND: Protein markers of cellular proliferation, hypoxia, apoptosis, cell cycle checkpoints, growth factor signalling and inflammation in localised prostate tumours have previously shown prognostic ability. A translational substudy within the CHHiP trial of radiotherapy fractionation evaluated whether these could improve prediction of prognosis and assist treatment stratification following either conventional or hypofractionated radiotherapy. METHODS: Using case:control methodology, patients with biochemical or clinical failure after radiotherapy (BCR) were matched to patients without recurrence according to established prognostic factors (Gleason score, presenting PSA, tumour-stage) and fractionation schedule. Immunohistochemical (IHC) staining of diagnostic biopsy sections was performed and scored for HIF1α, Bcl-2, Ki67, Geminin, p16, p53, p-chk1 and PTEN. Univariable and multivariable conditional logistic regression models, adjusted for matching strata and age, estimated the prognostic value of each IHC biomarker, including interaction terms to determine BCR prediction according to fractionation. FINDINGS: IHC results were available for up to 336 tumours. PTEN, Geminin, mean Ki67 and max Ki67 were prognostic after adjusting for multiple comparisons and were fitted in a multivariable model (n = 212, 106 matched pairs). Here, PTEN and Geminin showed significant prediction of prognosis. No marker predicted BCR according to fractionation. INTERPRETATION: Geminin or Ki67, and PTEN, predicted response to radiotherapy independently of established prognostic factors. These results provide essential independent external validation of previous findings and confirm a role for these markers in treatment stratification. FUNDING: Cancer Research UK (BIDD) grant (A12518), Cancer Research UK (C8262/A7253), Department of Health, Prostate Cancer UK, Movember Foundation, NIHR Biomedical Research Centre at Royal Marsden/ICR

    Genomic architecture and evolution of clear cell renal cell carcinomas defined by multiregion sequencing

    No full text
    PMCID: PMC4636053.-- et al.Clear cell renal carcinomas (ccRCCs) can display intratumor heterogeneity (ITH). We applied multiregion exome sequencing (M-seq) to resolve the genetic architecture and evolutionary histories of ten ccRCCs. Ultra-deep sequencing identified ITH in all cases. We found that 73-75% of identified ccRCC driver aberrations were subclonal confounding estimates of driver mutation prevalence. ITH increased with the number of biopsies analyzed, without evidence of saturation in most tumors. Chromosome 3p loss and VHL aberrations were the only ubiquitous events. The proportion of C>T transitions at CpG sites increased during tumor progression. M-seq permits the temporal resolution of ccRCC evolution and refines mutational signatures occurring during tumor development.C.S. and M. Gerlinger are supported by grants from Cancer Research UK Biomarkers and Imaging Discovery and Development Committee (BIDD), the Medical Research Council and the Seventh European Union Framework Programme, and C.S. is supported by the Breast Cancer Research Foundation and the Rosetrees Trust. We acknowledge the Ramón y Cajal program of the Ministerio de Economía y Competitividad, Spain, and Novartis for funding support for E-PREDICT clinical trials. This study was supported by researchers at the National Institute for Health Research Biomedical Research Centres at University College London Hospitals and at the Royal Marsden Hospital.Peer Reviewe

    LCSH and PRECIS in library and information science : a comparative study

    No full text
    Made available in DSpace on 2008-03-15T16:30:16Z (GMT). No. of bitstreams: 3 gslisoccasionalpv00000i00194.pdf: 3545205 bytes, checksum: 9af38d944a3c553d6d4647addf04a8d5 (MD5) gslisoccasionalpv00000i00194_ocr.txt: 149929 bytes, checksum: 6957012b80dca086fead640d4187b859 (MD5) gslisoccasionalpv00000i00194_tei.xml: 158708 bytes, checksum: afa471710232bc77130fe29f418095ca (MD5) Previous issue date: 1992Includes bibliographical references (p. 66-68)Compares the performance of LCSH and PRECIS for the books published in 1987 in the field of library and information science in order to investigate the strengths and weaknesses of each system

    0005

    No full text
    LOCALS. Assemblyman Walter Clark is in town today. FOB SALE. A few choice lots adjo:ning Prof. ! Marx new house on Bryant St. ,_ ,,. _., , , ., . ! Block 25. Choice location, fine Public School entertainment to-1 yiuw< App|y ftt MiBS MmerS re* night at Nortree Hall. Be sure and jgidence on Scott St, near Addison attend. Ave. on same block, or address P.O. n . __. ._,.._ . box 270 Pulo Alto. MlUpltf Remember the school children s| .. , entertainment at Nortree Hall to- j Robefl and blankets from 1.00 up night, f *°r l'K' n****- ^,r> d-iys •*■••■ CarrePs. Contractor M. P. Madison has completed the Griswold cottage on Bryant street Mrs. Chas. Haight, of Stti.taja||d vegetable Market Clara, is visiting her sister, Mrs. - Stephens this week. All kinds of Fruit and Vegetables Mr. Oatiier who has lieen con-1 -n Sea.o., nectcd with the Palace Pharmacy I University Avenue Two doors left Thursday for the north. [ BEL0W THE FAIR pa.0 Alt0.! Mrs. C. Keene who has been m visiting her daughter at Alameda! IP RAMOS & CCw> ^^FRUIT OurSoap- ls carefully selected. It is the best of its kind, all the way through, from 5c. to $1.00 You want good soap, of course. We can supply you. PALACE PHARMACY •Will Furnish you We have calls for Houses Furnished and Unfurnished—Bring in your list of Property. Wanted #1.000, and #1.1.00, to borrow on Palo Alto Property Insurance at CUT RATES-c^*" E. G. DYER & CO. for the past three weeks is in town. today. ID Miss Hat lie Lummis of Chicago, sister of Charles F. Lummis, is visiting Mr. and Mrs. Frank Cramer at their home in Mnnzanita Hall. Bidd were opened this afternoon for the construction of a 7 room bouse for J. J. Morris on Bryant Street adjoining the house occupied by Professor Hoskins. G. \V. Mosher was awarded the contract ELECTRIC LIGHTS Attorney at Law. Notary Public Justice of the Pence PRESBYTERIAN CHURCH ITEMS The National Memorial Day will lm observed at 11 a. m. The Lighting S I0l-j)iliiy jj Special rales for residence Foreatinial-B ami rates apply person- allv or by letter to C, Im WOOD vi-MBii Redwood City. Branch Olliee, Nortree Hall, Palo Alto, Cal. BUY YOUr OIL from the Bysodoir_*yc«MigetairacIeanoUo_ •*' J iiilt strength; a result widen cannot lw obtalned By any other method of delivering oil as ha. been found bv several vear. experience of then tank wagons in I-.ii. tern cities. G. H. ALLEN Prop TANK WAGON mm wi,h Tacoma Mil Co. Order boxes; University P. O. and near P. O. Menlo Park RED __________ ESTATE Thors IS acres ol land, part Vineyard ami .art Fruit, with houm* and, -•am. A tieautiful cypres***-! pastor's subject will Ih* "Immortal-]avenue. Well fenced. Will' , ,,, . n mi *ni ! bo sold »t a harimiu. Tbrei tty of Character.' rhere will be I ,„ii,... from Palo^tdto. music appropriate to the day.' Two fine bosioou lot. in good location At S p. m. the pastor will speak on j 'VfUvVf'il.e verv best and cheapest "The Significance of the Hague Residence lots, inside and Peace Conference." STUDIO MARTEN BUILDING 826 MARKET, Phelan Building PALO ALTO SAN FRANCISCO Kodaks developed and printed for amateurs. Studio at Palo Alto 33. O. To*ornb <"jjer_t<ir OPEN EVERY DAY In.111 :i t.. 10 It.s or Unfurnished tolet. Kurn.hc.1 The pastors of Palo Alio have de-; J. B. DALEY, Real ESlale pK"! cided that each Church would ob- ;iy at 11 a. m. at their place of worship instead of " i Tin- I3Aloy ExprewM Oo. serve Memorial Day at 11 a. ni.b Will haul to or from Sun Jose or Sun Francisco, Furniture packed, crated or _. * stored :it reasonable prices. the 1'nioii Service. iii._.1in •.ttop.o. j.n. wali.y Mm* JHE PLAZA Everything new und clean. Wm. Patrick, Proprietor -RESTAURANT Ki.-nt Class Home Cooking On the Circle, Opp. Depot LAUMEISTER & DOWNING. STEAM LAUNDRY BUILDERS Estimates on all kinds ol Work. Telephone with Tacoma Mill Co 3=*. o. Sox aoi, np-tio -liio OF SAX JOSE Wnsliitin callt-il tor and Iii-livt-reiI in I'alo Alto Montlava anil Friday. E. C. MOSHER, Agent Satisfactory Work at Reasonable Rates MOUROT & CO. ... Redwood City, Agent. lor Tbe -. Tltotaae Parisian Di ine and Clt-anitli* Work. 27 Tenth Street, Mm liaticlHco, New Machinery ami Skilled Labor] Guarantees the Very Best Work. Wc use an Improved System of .Marking that guards against loss' of Articles. mwwr\wwwwmrwm CEO, W. IMKMS PKTKK MULLKN MULLEM _. HARMS. Fine Horseshoeing Spe.ial attention given to Lace G_rtain.jHlgH *"-"-■ asDecialty Carriages Built and Repaired Xlopniriii*; JMontly «v 3E**_-O3oei*t>tly 33ono KET. between l'nivermty and Lytton Avenr Palo Altc Work called for and delivered Leave orders at| Blankets, Table Glotks la*-, brown AND.GENERAL HOUSEHOLD WORK fiostier's Billiard Parlor Cabinet maker All Kinds of job Carpentering Repairing at Reasonable Rates High St. near University Av
    corecore