Ian Sims
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View article: Experimental evidence of quantum interferences in CO-H$_2$ rotational energy transfer at room temperature
Experimental evidence of quantum interferences in CO-H$_2$ rotational energy transfer at room temperature Open
Using time-resolved infrared-vacuum-ultraviolet double-resonance spectroscopy, experimental room temperature measurements of state-to-state rate coefficients for rotational energy transfer within the X $^1\Sigma^+(v=2)$ vibrational state o…
View article: A comprehensive study of the gas-phase formation network of HC$_5$N: theory, experiments, observations and models
A comprehensive study of the gas-phase formation network of HC$_5$N: theory, experiments, observations and models Open
Cyanopolyynes are among the largest and most commonly observed interstellar Complex Organic Molecules in star-forming regions. They are believed to form primarily in the gas-phase, but their formation routes are not well understood. We pre…
View article: A comprehensive study of the gas-phase formation network of HC5N: theory, experiments, observations, and models
A comprehensive study of the gas-phase formation network of HC5N: theory, experiments, observations, and models Open
Cyanopolyynes are among the largest and most commonly observed interstellar complex organic molecules in star-forming regions. They are believed to form primarily in the gas phase, but their formation routes are not well understood. We pre…
View article: Product-specific reaction kinetics in continuous uniform supersonic flows probed by chirped-pulse microwave spectroscopy
Product-specific reaction kinetics in continuous uniform supersonic flows probed by chirped-pulse microwave spectroscopy Open
Experimental studies of the products of elementary gas-phase chemical reactions occurring at low temperatures (<50 K) are very scarce, but of importance for fundamental studies of reaction dynamics, comparisons with high-level quantum d…
View article: Cover crops in cereal rotations: A quantitative review
Cover crops in cereal rotations: A quantitative review Open
The use of cover crops in conventional agriculture is not fully accepted. This is probably due to the substantial variability in outcomes reported and is complicated by the conflation of a host of techniques under the same umbrella term, o…
View article: Reconciling land sharing and sparing: a conceptual model for land use
Reconciling land sharing and sparing: a conceptual model for land use Open
Since the introduction of the terms in the early 2000s, the land sharing versus land sparing dichotomy has sparked considerable discussion stemming from the relationship between food production and ecological function. The theory underpinn…
View article: Below-ground pitfall traps for standardised monitoring of soil mesofauna: Design and comparison to Berlese/Tullgren funnels
Below-ground pitfall traps for standardised monitoring of soil mesofauna: Design and comparison to Berlese/Tullgren funnels Open
Sampling of soil mesofauna has been traditionally carried out with Berlese/Tullgren extractions, a century old technique. However, sampling methods involving the extractions of soil are becoming increasingly difficult to implement and stan…
View article: PRODUCT BRANCHING RATIO MEASUREMENTS AT LOW TEMPERATURES FOR REACTIONS OF THE CN RADICALS WITH HYDROCARBONS
PRODUCT BRANCHING RATIO MEASUREMENTS AT LOW TEMPERATURES FOR REACTIONS OF THE CN RADICALS WITH HYDROCARBONS Open
Molecular clouds are known to host a rich chemistry despite seemingly unfavorable conditions.In particular, a wide variety of cyano-polyynes and cyano-aromatic species have been detected in the past years.These nitrile compounds are also p…
View article: INVESTIGATING THE ONSET OF NUCLEATION: LOW TEMPERATURE REACTION KINETICS OF HETERODIMER FORMATION
INVESTIGATING THE ONSET OF NUCLEATION: LOW TEMPERATURE REACTION KINETICS OF HETERODIMER FORMATION Open
Nucleation is a key process in cloud and dust particle formation in different systems including planetary atmospheres and circumstellar shells.It consists of a succession of unions of small gas-phase molecules leading to the formation and …
View article: Below-Ground Pitfall Traps for Standardised Monitoring of Soil Fauna: Design and Comparison to Berlese/Tullgren Funnels
Below-Ground Pitfall Traps for Standardised Monitoring of Soil Fauna: Design and Comparison to Berlese/Tullgren Funnels Open
View article: Laboratory astrochemistry of and on dust and ices: general discussion
Laboratory astrochemistry of and on dust and ices: general discussion Open
Ugo Jacovella addressed all: What are the rigorous definitions and thus differences between ices, grains and dusts? Murthy S. Gudipati answered: These definitions are a bit slippery. As per my understanding, here are the definitions and di…
View article: DYNAMICS AND KINETICS STUDIED BY CHIRPED PULSE MICROWAVE SPECTROSCOPY IN COLD UNIFORM SUPERSONIC FLOWS
DYNAMICS AND KINETICS STUDIED BY CHIRPED PULSE MICROWAVE SPECTROSCOPY IN COLD UNIFORM SUPERSONIC FLOWS Open
View article: PRODUCT-SPECIFIC REACTION KINETICS OF CN WITH PROPENE PROBED BY CHIRPED-PULSE FOURIER TRANSFORM MILLIMETER WAVE SPECTROSCOPY
PRODUCT-SPECIFIC REACTION KINETICS OF CN WITH PROPENE PROBED BY CHIRPED-PULSE FOURIER TRANSFORM MILLIMETER WAVE SPECTROSCOPY Open
View article: Collisional excitation of HNC by He found to be stronger than for structural isomer HCN in experiments at the low temperatures of interstellar space
Collisional excitation of HNC by He found to be stronger than for structural isomer HCN in experiments at the low temperatures of interstellar space Open
View article: Correction to: Recommendation of RILEM TC 258-AAA: RILEM AAR-0 outline guide to the use of RILEM methods in the assessment of the alkali-reactivity potential of concrete
Correction to: Recommendation of RILEM TC 258-AAA: RILEM AAR-0 outline guide to the use of RILEM methods in the assessment of the alkali-reactivity potential of concrete Open
View article: SOLIS
SOLIS Open
Context. Protostellar jets are an important agent of star formation feedback, tightly connected with the mass-accretion process. The history of jet formation and mass ejection provides constraints on the mass accretion history and on the n…
View article: Data for Hays et al Nature Chemistry 2022 NCHEM-21050864A
Data for Hays et al Nature Chemistry 2022 NCHEM-21050864A Open
Source data for Hays et al Nature Chem 2022 NCHEM-21050864A The source data relating to Figures 1-3 of the main article as well as source data for the Figures in the Supplementary Information are presented in separate directories, each wit…
View article: Data for Hays et al Nature Chemistry 2022 NCHEM-21050864A
Data for Hays et al Nature Chemistry 2022 NCHEM-21050864A Open
Source data for Hays et al Nature Chem 2022 NCHEM-21050864A The source data relating to Figures 1-3 of the main article as well as source data for the Figures in the Supplementary Information are presented in separate directories, each wit…
View article: Absolute measurements of state-to-state rotational energy transfer between CO and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">H</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> at interstellar temperatures
Absolute measurements of state-to-state rotational energy transfer between CO and at interstellar temperatures Open
Experimental measurements and theoretical calculations of state-to-state rate coefficients for rotational energy
\ntransfer of CO in collision with H2 are reported at the very low temperatures prevailing in dense interstellar clouds
\n(5–2…
View article: Recommendation of RILEM TC 258-AAA: RILEM AAR-0 outline guide to the use of RILEM methods in the assessment of the alkali-reactivity potential of concrete
Recommendation of RILEM TC 258-AAA: RILEM AAR-0 outline guide to the use of RILEM methods in the assessment of the alkali-reactivity potential of concrete Open
This outline guide, RILEM AAR-0, describes how to use the following test methods in the assessment of the alkali reactivity potential of aggregates and concrete. The test methods included are: AAR-1.1 Petrographic examination method (2016)…
View article: Assessment of AAR and Sulfate Attack on Wadi Gravel Concrete after 4 Years in Service
Assessment of AAR and Sulfate Attack on Wadi Gravel Concrete after 4 Years in Service Open
Wadi gravel is a local aggregate in Qatar that could contribute to enhanced sustainability by replacing expensive imported gabbro. The material needs to be processed before use to reduce sulfate content to acceptable levels. The paper pres…
View article: How Measurements Of Rate Constants At Low Temperature Increase The Predictivity Of Photochemical Models Of Titans's Atmosphere
How Measurements Of Rate Constants At Low Temperature Increase The Predictivity Of Photochemical Models Of Titans's Atmosphere Open
Kinetic data measured at low temperatures are very sparse; for instance, in state-of-the-art photo-chemical models of Titan atmosphere, less than 10% of the rates have been measured in the relevant temperature range (100-200 K). A conseque…
View article: OBSERVING CHEMICAL REACTIONS IN LOW-TEMPERATURE SUPERSONIC FLOWS USING CHIRPED PULSE FOURIER TRANSFORM MILLIMETER WAVE SPECTROSCOPY
OBSERVING CHEMICAL REACTIONS IN LOW-TEMPERATURE SUPERSONIC FLOWS USING CHIRPED PULSE FOURIER TRANSFORM MILLIMETER WAVE SPECTROSCOPY Open
The CPUF (Chirped Pulse in Uniform Flow) technique has been used previously in pulsed CRESU (Reaction Kinetics in Uniform Supersonic Flow) conditions to observe chemical reactions at low temperatures. We have adapted the technique to the c…
View article: IMPROVING THE SENSITIVITY OF CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE DETECTION IN UNIFORM SUPERSONIC FLOWS
IMPROVING THE SENSITIVITY OF CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE DETECTION IN UNIFORM SUPERSONIC FLOWS Open
The CPUF (Chirped Pulse in Uniform supersonic Flow) technique is a combination of the CRESU (Cinétique de Réaction en Ecoulement Supersonique Uniforme, or Reaction Kinetics in Uniform Supersonic Flow) technique to provide a very low temper…
View article: A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures
A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures Open
A new instrument dedicated to the kinetic study of low-temperature gas phase neutral–neutral reactions, including clustering processes, is presented. It combines a supersonic flow reactor with vacuum ultra-violet synchrotron photoionizatio…
View article: A new instrument for kinetics and branching ratio studies of gas phase\n collisional processes at very low temperatures
A new instrument for kinetics and branching ratio studies of gas phase\n collisional processes at very low temperatures Open
A new instrument dedicated to the kinetic study of low-temperature gas phase\nneutral-neutral reactions, including clustering processes, is presented. It\ncombines a supersonic flow reactor with Vacuum Ultra-Violet (VUV) synchrotron\nphoto…
View article: Rate Constants of the CN + Toluene Reaction from 15 to 294 K and Interstellar Implications
Rate Constants of the CN + Toluene Reaction from 15 to 294 K and Interstellar Implications Open
CN is known for its fast reactions with hydrocarbons at low temperatures, but relatively few studies have focused on the reactions between CN and aromatic molecules. The recent detection of benzonitrile in the interstellar medium, believed…
View article: A novel Ka-band chirped-pulse spectrometer used in the determination of pressure broadening coefficients of astrochemical molecules
A novel Ka-band chirped-pulse spectrometer used in the determination of pressure broadening coefficients of astrochemical molecules Open
A novel chirped-pulse Fourier transform microwave (CP-FTMW) spectrometer has been constructed to cover the Ka-band (26.5 GHz–40 GHz) for use in the CRESUCHIRP project, which aims to study the branching ratios of reactions at low temperatur…
View article: Synthesis of Novel Triazole-Containing Phosphonate Polymers
Synthesis of Novel Triazole-Containing Phosphonate Polymers Open
© 2015 CSIRO. The objective of this research was to develop novel phosphonate-containing polymers as they remain a relatively under researched area of polymer chemistry. Herein, we report the synthesis and characterization of 2-(1-(2-(diet…