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Using light to improve commercial value

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Horticulture Research 2018年第1期5卷 332-344页

作者： Matthew alan jones School of Biological Sciences University of EssexWivenhoe ParkEssexColchesterCO43SQUK

The plasticity of plant morphology has evolved to maximize reproductive fitness in response to prevailing environmental *** architecture elaborates to maximize light harvesting,while the transition to flowering can either be accelerated or delayed to improve an individual’s *** of the most important environmental signals is light,with plants using light for both photosynthesis and as an environmental *** perceive different wavelengths of light using distinct *** advances in LED technology now enable light quality to be manipulated at a commercial scale,and as such opportunities now exist to take advantage of plants’developmental plasticity to enhance crop yield and quality through precise manipulation of a crops’lighting *** review will discuss how plants perceive and respond to light,and consider how these specific signaling pathways can be manipulated to improve crop yield and quality.

关键词： harvesting plasticity prevailing

Reflections on variability in the blood-breath ratio of ethanol and its importance when evidential breath-alcohol instruments are used in law enforcement

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Forensic Sciences Research 2020年第4期5卷 300-308页

作者： alan Wayne jones Johnny Mack Cowan Division of Drug Research Department of Biomedical and Clinical SciencesLinkoping UniversityLinkopingSweden Department of Public Safety(now retired) AustinTXUSA

Variability in the blood-breath ratio(BBR)of alcohol is important,because it relates a mea-surement of the blood-alcohol concentration(BAC)with the co-existing breath-alcohol con-centration(BrAC).The BBR is also used to establish the statutory BrAC limit for driving from the existing statutory BAC limits in different *** in-vivo BBR depends on a host of analytical,sampling and physiological factors,including subject demographics,time after end of drinking(rising or falling BAC),the nature of the blood draw(whether venous or arterial)and the subject's breathing pattern prior to exhalation into the breath *** results from a controlled drinking study involving healthy volunteers(85 men and 15 women)from three ethnic groups(Caucasians,Hispanics and African Americans)were used to evaluate various factors influencing the *** in breath was determined with a quantitative infrared analyzer(Intoxilyzer 8000)and BAC was determined by headspace gas chromatography(HS-gC).The BAC and BrAC were highly correlated(r = 0.948)and the BBR in the post-absorptive state was 2 382±119(mean ± SD).The BBR did not depend on gen-der(female:2 396±101 and male:2 380±123,P>0.05)nor on racial group(Caucasians 2 398±124,African Americans 2 344±119 and Hispanics 2 364±104,P>0.05).The BBR was lower in subjects with higher breath-and body-temperatures(Pger exhalation times into the breath-analyzer(P<0.001).In the post-absorptive state,none of the 100 subjects had a BBR of less than 2 100∶1.

关键词： Forensic sciences forensic toxicology blood-ethanol breath-ethanol blood-breath ratio biological variation drunken driving law-enforcement statutory alcohol limits

Predicting the mode of flow in pneumatic conveying systems—A review

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Particuology 2008年第5期6卷 289-300页

作者： Mark g.jones Kenneth C.Williams Centre for Bulk Solids and Particulate Technologies School of EngineeringUniversity of NewcastleNewcastle 2308Australia

An initial prediction of the particulate mode of flow in pneumatic conveying systems is beneficial as this knowledge can provide clearer direction to the pneumatic conveying design process. There are three general categories of modes of flow, two dense flows： fluidised dense phase and plug flow, and dilute phase oniy. Detailed in this paper is a review of the commonly used and available techniques for predicting mode of flow. Two types of predictive charts were defined： basic particle parameter based （e.g. particle size and density） and air-particle parameter based （e.g. permeability and de-aeration）. The basic particle techniques were found to have strong and weak areas of predictive ability, on the basis of a comparison with data from materials with known mode of flow capability. It was found that there was only slight improvement in predictive ability when the particle density was replaced by loose-poured bulk density in the basic parameter techniques. The air-particle-parameter-based techniques also showed well-defined regions for mode of flow prediction though the data set used was smaller than that for the basic techniques. Also, it was found to be difficult to utilise de-aeration values from different researchers and subsequently, an air-particle-based technique was developed which does not require any de-aeration parameter in its assessment.

关键词： Pneumatic conveying Mode of flow Dense phase Permeability De-aeration

A subfossil chironomid-total phosphorus inference model for lakes in the middle and lower reaches of the Yangtze River

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Chinese Science Bulletin 2006年第17期51卷 2125-2132页

作者： ZHANg Enlou alan Bedford Richard jones SHEN Ji WANg Sumin TANg Hongqu Nanjing Institute of geography & Limnology Chinese Academy of Sciences Nanjing 210008 China Natural geographical and Applied Sciences Edge Hill College Ormskirk L394QP England Department of geography University of Exeter Exeter EX4 4RJEngland School of Biology Nankai University Tianjin 300017 China

The results of an investigation into the relationship between surface sediment subfossil chi- ronomid distribution and water quality are presented. Data from 30 lakes in the middle and lower reaches of the Yangtze River indicate that the nutrient gradi- ent was the major factor affecting the distribution of chironomids across these sites. Canonical corre- spondence analysis (CCA) revealed that of 12 sum- mer water environmental variables, total Phosphorus was most important, accounting for 20.1% of the variance in the chironomid data. This was significant enough to allow the development of quantitative in- ference models. A TP inference model was devel- oped using weighted averaging (WA), partial least squares (PLS) and weighted averaging partial least squares (WA-PLS). An optimal two-component WA-PLS model provided a high jack-knifed coeffi- cient of prediction for conductivity r 2jack = 0.76, with a low root mean squared error of prediction (RMSEPjack = 0.13). Using this model it is possible to produce long-term quantitative records of past water quality for lacustrine sites across the middle and lower reaches of the Yangtze River, which has important implications for future lake management and eco- logical restoration.

关键词：湖泊亚化石摇蚊推理模型长江中下游地区

Field Phenomics:Will It Enable Crop Improvement?

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Plant Phenomics 2021年第1期3卷 310-325页

作者： David M.Deery Hamlyn g.jones CSIRO Agriculture and Food CanberraACTAustralia Division of Plant Sciences University of DundeeUK School of Agriculture and Environment University of Western AustraliaAustralia

Field phenomics has been identified as a promising enabling technology to assist plant breeders with the development of improved cultivars for ***,despite much investment,there are few examples demonstrating the application of phenomics within a plant breeding *** review recent progress in field phenomics and highlight the importance of targeting breeders’needs,rather than perceived technology needs,through developing and enhancing partnerships between phenomics researchers and plant breeders.

关键词： breeding cultivar Crop

Determination of slug permeability factor for pressure drop prediction of slug flow pneumatic conveying

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Particuology 2008年第5期6卷 307-315页

作者： Kenneth C.Williams Mark g.jones Tobias Krull Centre for Bulk Solids and Particulate Technology The University of NewcastleCallaghanNSW 2308Australia

Current models for pressure drop prediction of slug flow pneumatic conveying in a horizontal pipeline system assume some type of steady state conditions for prediction, which limits their capability for increased predictive accuracy relative to experimental data. This is partly because of the nature of slug flow pneumatic conveying system, which, as a dynamic system, never becomes stable. By utilising conservation of mass （airflow）, a dynamic pressure analysis model is proposed on the basis of the derivative of the upstream pressure behaviour. The rate of air permeation through slug, one of the important factors in the conservation model, is expressed as a function of a slug permeability factor. Other factors such as slug velocity, slug length and the fraction of stationary layer were also considered. Several test materials were conveyed in single-slug tests to verify the proposed pressure drop model, showing good agreement between the model and experimental results.

关键词： Slug flow pneumatic conveying Pressure drop Air mass conversation Slug permeability factor

Lithospheric Electrical Structure across the Eastern Segment of the Altyn Tagh Fault on the Northern Margin of the Tibetan Plateau

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Acta geologica Sinica(English Edition) 2015年第1期89卷 90-104页

作者： ZHANg Letian YE gaofeng JIN Sheng WEI Wenbo Martyn UNSWORTH alan g.jones JINg Jianen DONg Hao XIE Chengliang Florian LE PAPE Jan VOZAR School of geophysics and Information Technology China University of Geosciences Key Laboratory of geo-detection of Ministry of Education State Key Laboratory of geological Processes and Mineral Resources Department of Physics University of Alberta Dublin Institute for Advanced Studies

Project INDEPTH （InterNational DEep Profiling of Tibet and the Himalaya） is an interdisciplinary program designed to develop a better understanding of deep structures and mechanics of the Tibetan Plateau. As a component of magnetoteUuric （MT） work in the 4th phase of the project, MT data were collected along a profile that crosses the eastern segment of the Altyn Tagh fault on the northern margin of the plateau. Time series data processing used robust algorithms to give high quality responses. Dimensionality analysis showed that 2D approach is only valid for the northern section of the profile. Consequently, 2D inversions were only conducted for the northern section, and 3D inversions were conducted on MT data from the whole profile. From the 2D inversion model, the eastern segment of the Altyn Tagh fault only appears as a crustal structure, which suggests accommodation of strike slip motion along the Altyn Tagh fault by thrusting within the Qilian block. A large-scale off-proffie conductor within the mid-lower crust of the Qilian block was revealed from the 3D inversion model, which is probably correlated with the North Qaidam thrust belt. Furthermore, the unconnected conductors from the 3D inversion model indicate that deformations in the study area are generally localized.

关键词： magnetotelluries northern margin of the Tibetan Plateau eastern segment of the Altyn Taghfault lithospheric electrical structure

Characterization of the gas pulse frequency,amplitude and velocity in non-steady dense phase pneumatic conveying of powders

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Particuology 2008年第5期6卷 301-306页

作者： Kenneth C.Williams Mark g.jones Ahmed A.Cenna Centre for Bulk Solids and Particulate Technologies School of EngineeringUniversity of Newcastle

Current modelling techniques for the prediction of conveying line pressure drop in low velocity dense phase pneumatic conveying are largely based on steady state analyses. Work in this area has been on-going for many years with only marginal improvements in the accuracy of prediction being achieved. Experimental and theoretical investigations undertaken by the authors suggest that the flow mechanisms involved in dense phase conveying are dominated by transient effects rather than those of steady state and are possibly the principal reasons for the limited improvement in accuracy. This paper reports on investigations on the pressure fluctuation behaviour in dense phase pneumatic conveying of powders. The pressure behaviour of the gas flow in the top section of the pipeline was found to exhibit pulsatile oscillations. In particular, the pulse velocity showed variation in magnitude while the frequency of the oscillations rarely exceeded 5 Hz. A wavelet analysis using the Daubechie 4 wavelet found that the amplitude of the oscillations increased along the pipeline. Furthermore, there was significant variation in gas pulse amplitude for different types of particulate material.

关键词： Pneumatic conveying Powders Dense phase Pulsatile flow Transient flow

Impact of postoperative intravenous fluid administration on complications following elective hepato-pancreato-biliary surgery

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Hepatobiliary & Pancreatic Diseases International 2018年第5期17卷 402-407页

作者： Daniel Martin Panagis M.Lykoudis gabriel jones David Highton alan Shaw Sarah James Qiang Wei giuseppe Fusai Division of Surgery&Interventional Science University College LondonGower StBloomsburyLondonWC1E 6BTUK Free Perioperative Research group Royal Free HospitalPond stLondonNW3 2QGUK Department of Hepato-Pancreato-Biliary Surgery&Liver Transplantation Royal Free HospitalPond stLondonNW3 2QGUK King’s College Hospital Denmark HillLondon SE5 9RSUK Neurocritical Care Unit the National Hospital for Neurology and NeurosurgeryQueen SquareLondonWC1N 3BGUK London School of Hygiene&Tropical Medicine Keppel StreetLondonWC1E 7HTUK Division of Hepatobiliary and Pancreatic Surgery Department of SurgeryFirst Affiliated HospitalZhejiang University School of Medicine79 Qingchun RoadHangzhou 310003China

Background: The impact of perioperative intravenous fluid administration on surgical outcomes has been documented in literature, but not specifically studied in the context of hepato-pancreato-biliary(HPB) surgery. This study aimed to investigate the impact of postoperative intravenous fluid administration on intensive care unit(ICU), in this subgroup of patients. Methods: A single-center retrospective cohort of 241 HPB patients was assessed, focusing on intravenous fluid administration in ICU, during the first 24 h. Intravenous fluid variables were compared to hospital stay and postoperative complications. Data were assessed using Spearman's correlation test for bivariate correlations and logistic regression for multivariate analysis. Results: The median volume of intravenous fluid administered in the first 24 h postoperatively was 4380 mL, of which 2200 mL was crystalloid, 1500 mL colloid and 680 mL "other" fluid. Patients with one or more complications had a higher median total intravenous fluid input(4790 vs. 4300 mL), higher colloid volume(20 0 0 vs. 150 0 mL), lower urine output(1595 vs. 1900 mL) and greater overall fluid balance( + 3040 vs. + 2553 mL) than those without complications. There were correlations between total intravenous fluid volume administered( r = 0.278, P alance( r = 0.344, P gth of hospital stay. Logistic regression model was constructed to predict the occurrence of one or more complications; total intravenous fluid volume and overall fluid balance were both independent significant predictors(OR = 2.463, P = 0.007; OR = 1.001, P = 0.011; respectively). Conclusions: Administration of high volumes of intravenous fluids in the first 24 hours post-HPB surgery, along with higher positive fluid balance is associated with a higher rate of complications and longer hospital stay. Moreover, lower urine output is associated

关键词： Intravenous fluids Hepato-pancreato-biliary surgery Postoperative outcome