Designing and managing multiple pipelines

There is now a growing recognition that supply chains should be designed from ‘the customer backwards’ rather than from ‘the company outwards’. If such a view is accepted then the implication is that since the organisation will likely be serving multiple markets or segments there will be the need to design and manage multiple ‘pipelines’ to serve those different customers. To assist decision makers in their choice of appropriate supply chain design a framework is proposed based upon multiple criteria. A case study is presented which highlights the benefits of selecting, engineering and operating multiple pipelines tailored to the needs of th

Eosinophile Leucocyte: its occurrence and significance with special reference to asthma

I. There are four main groups of conditions in which eosinophilia is of frequent occurrence:-(a) Convalescence from infectious fevers, and in the course of scarlet fever.(h) Skin diseases.(c) Asthma.(d) Parasitic infestations.II. The eosinophilia is of low grade in conva­lescence and in most skin diseases,except dermatitis herpetiformis and pemphigus.III. A low grade eosinophilia is present in 50 per cent of asthmatic patients.IV. High grade eosinophilia is specially associated with infestations of Bilharzia, Pilaria, Trichina and Ankylostoma; a low grade eosinophilia may occur with any parasitic infestation

Basic Derivatives of Fluorene and Anthracene, and Isomerisation Reactions with Hydrogen Fluoride

Part I. Attempts to prepare the basic esters beta-diethyl-aznino ethyl 1,2,3,4,10,11-hexahydrof luorene-9-carboxylate and beta-diethylaminoethyl 1,2,3,4,9,10,11,12-octahydro-anthracene-9-carboxylate for testing as antispasmodic drugs have been made. These compounds have certain structural features which, in similar compounds, have been found to enhance the antispasmodic properties of these compounds. The reduction of fluorene-9-carboxylic acid has been studied with limited success. Hexahydrofluorene-9-carboxylic acid, an intermediate required in the synthesis of the former ester, has been obtained but only in poor yield. A further acid of unknown structure and several neutral by-products have also been isolated. Other synthetic methods failed due to the reluctance of hexahydro-fluorenone to form a cyanhydrin and the ease with which 9-halogene-hexahydrofluorenes decomposed. trans- as-hexahydroanthrone did not form a cyanhydrin so that trans- as- octahydroanthracene-9-carboxylio acid, an intermediate in the synthesis of the latter ester, was not obtained. The basic ethers, beta-diethylaminoethyl fluorenyl-9-ether. beta-diethylsaminoethyl hexahydrofluorenyl-9-ether and beta-diethylaminoethyl trans-as-octahydroanthranyl-9-ether, also required for testing as antispasmodic drugs, were obtained by condensation of the sodio-derivatives of the alcohols 9-fluorenol, hexahydrofluoren-9-ol and 9-hydroxy-traus-as-octahydroanthracene, respectively, with beta-diethylaminoethyl chloride. Summary, Part II. A study of a new type of isomerisation reaction (68, 69) using hydrogen fluoride as catalyst has been extended to durene (1,2,4,5-tetramethylbenzene) and penta-methylbenzene derivatives. It has been confirmed that migration of methyl groups in this reaction occurs only when accompanied by cyclisation. Durene, durylcarboxylic acid and durylacetic acid were unaffected by treatment with hydrogen fluoride at room temperature . Under similar conditions beta-durylpropionic acid was partially converted to a mixture of 4,5,7-trimethyl-indan-l-one and 4,5,6,7-tetramethylindan-l-one. The latter ketone was also obtained from beta-pentamethylphenylpropionio acid under identical conditions. Similarly 1-durylbutyric acid yielded 5,6,7,8-tetramethyl-1,2,3,4-tetrahydroanphthalen-l-one. l-pentamethylphenylbutyric acid was recovered un- changed on similar treatment. Similarities between this type of reaction and previously described isomerisation reactions have been noted though migration in this new type of isomerisation reaction appears to be much more limited in extent. A possible mechanism for the new type of reaction, based on these similarities, has been evolved. A partial isomerisation in the durene nucleus under the influence of aluminium chloride under mild conditions has been noted and correlated to a similar isomerisation in the s-octahydroanthracene nucleus and to the Jacobsen reaction

Characteristics of successful interventions to reduce turnover and increase retention of early career nurses: a systematic review

Background nurse shortages have been identified as central to workforce issues in healthcare systems globally and although interventions to increase the nursing workforce have been implemented, nurses leaving their roles, particularly in the first year after qualification, present a significant barrier to building the nurse workforce. Objective to evaluate the characteristics of successful interventions to promote retention and reduce turnover of early career nurses. Design this is a systematic review Data sources Online databases including Academic Search Complete, Medline, Health Policy reference Centre, EMBASE, Psychinfo, CINAHL and the Cochran Library were searched to identify relevant publications in English published between 2001 and April 2018. Studies included evaluated an intervention to increase retention or reduce turnover and used turnover or retention figures as a measure. Review methods The review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Studies were quality-assessed using the Joanna Briggs Institute Critical Appraisal tools for Quasi Experimental and Randomised Controlled Trials. Retention/turnover data were used to guide the comparison between studies and appropriate measures of central tendency and dispersion were calculated and presented, based on the normality of the data. Results A total of 11, 656 papers were identified, of which 53 were eligible studies. A wide variety of interventions and components within those interventions were identified to improve nurse retention. Promising interventions appear to be either internship/residency programmes or orientation/transition to practice programmes, lasting between 27-52 weeks, with a teaching and preceptor and mentor component. Conclusions Methodological issues impacted on the extent to which conclusions could be drawn, even though a large number of studies were identified. Future research should focus on standardising the reporting of interventions and outcome measures used to evaluate these interventions and carrying out further research with rigorous methodology. Clinical practice areas are recommended to assess their current interventions against the identified criteria to guide development of their effectiveness. Evaluations of cost-effectiveness are considered an important next step to maximise return on investment

High Resolution Millimeter-Wave Mapping of Linearly Polarized Dust Emission: Magnetic Field Structure in Orion

We present 1.3 and 3.3 mm polarization maps of Orion-KL obtained with the BIMA array at approximately 4 arcsec resolution. Thermal emission from magnetically aligned dust grains produces the polarization. Along the Orion ``ridge'' the polarization position angle varies smoothly from about 10 degrees to 40 degrees, in agreement with previous lower resolution maps. In a small region south of the Orion ``hot core,'' however, the position angle changes by 90 degrees. This abrupt change in polarization direction is not necessarily the signpost of a twisted magnetic field. Rather, in this localized region processes other than the usual Davis-Greenstein mechanism might align the dust grains with their long axes parallel with the field, orthogonal to their normal orientation.Comment: AAS preprint:14 pages, 2 figures (3mm.eps and 1mm.eps); requires aaspp4.sty To be published in Astrophysical Journal Letter