Description of the skull of the genus Syluiornis Poplin, 1980 (Aves, Galliformes, Sylviornithidae new family), a giant extinct bird from the Holocene of New Caledonia.

El crani de Sylviornismostra una articulació crania rostral completament mòbil, amb dos còndils articulars situats sobre el rostrum, el qual s'insereix al crani en dues superfícies articulars allargades. La presència de dos procesos rostropterigoideus sobre el basisfenoide del rostrum i la forma dels palatins permet confirmar que aquest gènere pertany als Galliformes, però les característiques altament derivades del crani justifiquen el seu emplaçament a una nova família, extingida, Sylviornithidae. El crani de Syluiornis està extremadament eixamplat i dorsoventralment aplanat, mentre que el rostrum és massís, lateralment comprimit, dorsoventralment aixecat i mostra unes cristae tomiales molt fondes. El rostrum exhibeix un ornament ossi gran. La mandíbula mostra una símfisi molt allargada, les branques laterals també presenten unes cristae tomiales fondes, i la part posterior de la mandíbula és molt gruixada. Es discuteix el possible origen i l'alimentació de Syluiornis.The skull of Syluiornis shows a completely mobile craniorostral articulation, with two articular condyles situated on the rostrum, which insert into two elongated articular surfaces on the cranium. The presence of two rostropterygoíd processes on the basisphenoid rostrum and the shape of the palatines make it possible to confirm that this genus belongs to the Galliformes, but the highly derived characteristics of the skull justify its placement in a new, extinct family Sylviornithidae. The cranium of Syluiornis is extremely widened and dorsoventrally flattened, while the rostrum is massive, laterally compressed, dorsoventrally raised and displays very sharp cristae tomiales. The rostrum bears a large bony ornament. The mandible shows a very elongated symphysis, the lateral branches also show sharp cristae tomiales, and the posterior part of the mandible is very thick. The possible diet of Syluiornis is discussed

Phytoscreening for Chlorinated Solvents using Rapid in Vitro SPME Sampling: Application to Urban Plume in Verl, Germany

Rapid Detection and Delineation of Contaminants in Urban Settings is Critically Important in Protecting Human Health. Cores from Trees Growing above a Plume of Contaminated Groundwater in Verl, Germany, Were Collected in 1 Day, with Subsequent Analysis and Plume Mapping Completed over Several Days. Solid-Phase Microextraction (SPME) Analysis Was Applied to Detect Tetrachloroethene (PCE) and Trichloroethene (TCE) to Below Nanogram/liter Levels in the Transpiration Stream of the Trees. the Tree Core Concentrations Showed a Clear Areal Correlation to the Distribution of PCE and TCE in the Groundwater. Concentrations in Tree Cores Were Lower Than the Underlying Groundwater, as Anticipated; However, the Tree Core Water Retained the PCE:TCE Signature of the Underlying Groundwater in the Urban, Populated Area. the PCE:TCE Ratio Can Indicate Areas of Differing Degradation Activity. Therefore, the Phytoscreening Analysis Was Capable Not Only of Mapping the Spatial Distribution of Groundwater Contamination But Also of Delineating Zones of Potentially Differing Contaminant Sources and Degradation. the Simplicity of Tree Coring and the Ability to Collect a Large Number of Samples in a Day with Minimal Disruption or Property Damage in the Urban Setting Demonstrates that Phytoscreening Can Be a Powerful Tool for Gaining Reconnaissance-Level Information on Groundwater Contaminated by Chlorinated Solvents. the Use of SPME Decreases the Detection Level Considerably and Increases the Sensitivity of Phytoscreening as an Assessment, Monitoring, and Phytoforensic Tool. with Rapid, Inexpensive, and Noninvasive Methods of Detecting and Delineating Contaminants Underlying Homes, as in This Case, Human Health Can Be Better Protected through Screening of Broader Areas and with Far Faster Response Times. © 2011 American Chemical Society

Reptile remains from Tiga (Tokanod), Loyalty Islands, New Caledonia

Archaeological excavations on Tiga provide the first vouchered herpetological records for this small island between Lifou and Maré in the Loyalty Islands. Eighty-three skeletal elements from four sites yielded material assignable to skinks (Emoia loyaltiensis, Lioscincus nigrofasciolatus), geckos (Bavayia crass i-collis, B. sp., Gehyra georgpotthasti, Nactus pelagicus), and a boid snake (Candoia bihroni) all known from elsewhere in the Loyalties, as well as undetermined material consistent with these and other Loyalties lizards. Diagnostic features of geckos versus skinks for elements commonly recovered from archaeological sites and from owl pellets are discussed. Gehyra georgpotthasti has a limited distribution in the Loyalties and its occurrence on Tiga clarifies its range. The boid snake is the only reptile likely to have been harvested by human inhabitants of Tiga. The presence of gekkonid geckos in pre-European times is confirmed and contrasts with the situation of Grande Terre fossil sites, where only diplodactylid geckos have been recovered. Although it is anticipated that all species recovered from archaeological sites are still present on the island, a modern herpetofaunal survey is needed

Forensic Investigations in Complex Pollution Cases Involving PCBs, Dioxins and Furans: Potential Pitfalls and Tips

Providing a wide range of up to date topics on the advancement and refinement of environmental forensic techniques, this book ensures the reader gets a good understanding of the scope of environmental forensics

Using the grey literature to better understand the potential health impacts of cabin air quality

This paper presents an extensive database of 450 chemicals reported in the grey literature (technical reports and documents) in association with the aircraft cabin environment. 72% (325 chemicals) of these exhibited toxic properties. The most affected target organs were skin (302 chemicals), eyes (294 chemicals), respiratory system (234 chemicals), and central nervous system (94 chemicals). The database includes available occupational exposure limits for a wide range of these pollutants (118). Results from technical reports on pollutant levels in aircraft were compared against their threshold health-based screening values. When performing a human health risk assessment on a chemical-by-chemical basis, there were no exceedances of average concentrations against workplace exposure limits. However, there were exceedances in maximum reported concentrations for ozone and acrolein. When chemical exposure was assessed additively for chemicals affecting the same target organs, the average concentrations did not exceed workplace limits. However, there were exceedances for maximum concentrations for compounds that targeted the eyes, skin, cardiovascular system, blood, and respiratory system. When performing a conservative additive risk assessment of endocrine disruptors (and potential endocrine disruptors), exceedances were observed when compared with no observed adverse effect levels (NOAEL) and workplace exposure thresholds established for confirmed endocrine disruption. Our results indicate that no single chemical is responsible for the adverse health effects reported by aircrew and instead point towards a combination of chemicals and additional factors. This work stresses the need for more comprehensive assessments that are coupled with epidemiological studies and risk assessments that consider exposure to multiple pollutants and specificities of the environment inside aircraft

Dendrochemical forensics as material evidence in courts: How could trees lie?

The legal admissibility of scientific tools, such as dendrochemistry providing forensic evidence for criminal or civil cases, critically relies on the quality of fundamental and applied scientific research. The “Daubert” and “Frye” criteria that federal courts in the U.S.A use for determining legal admissibility requires publication of the scientific basis for the tool, and general acceptance by the scientific community. The field of dendroforensics is rapidly evolving, with new methods constantly being developed. In this manuscript we investigate how this dendrochemical evidence has been used successfully in the courtroom. The study of tree rings using physical anatomical and dendrochronological methods has been used as evidence in courts for over 150 years. From these beginnings in dendroecology dendrochemical and biological methods have matured enough to allow it to be used in forensic investigations, finding applications as a new independent line of evidence around the world, supporting cases involving murder, trafficking of protected species, and pollution crimes. We summarize some of the key applications of dendrochemistry in forensic cases and illustrate them with courtroom examples. The basic analytical methods discussed (e.g., PCR, GC-MS, LIBS, LA/ICP-MS, EDXRF) are all conventional. However, for findings to be relevant to judicial cases, the data is normally applied with additional lines of evidence gathered such as tree physiology and relevant statistics. This can allow us to gain more powerful data to help age date a specific event or to spatially identify a source material. The purpose of this article is to show how recent research has paved the way for the use of dendrochemical evidence in courts. It shows how dendrochemistry can be useful for forensic investigations including: murder cases, trafficking of protected species, and pollution crimes. The applications are illustrated by several summarized legal cases, but due to the confidential nature of some of these cases it was not always possible to provide full details or references

A comparison of fresh and used aircraft oil for the identification of toxic substances linked to aerotoxic syndrome

Fresh and used aircraft engine lubricants (Mobil Jet Oil II) were analysed using a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer (FTICRMS) and comprehensive two dimensional gas chromatography with high resolution time of flight mass spectrometry (GCxGC-HRTOFMS). The composition of the fresh oil was established, with special focus to its tricresyl phosphate (TCP) content as this has formed the focus for most investigations into aerotoxic syndrome. The results showed that only four TCP isomers were present at detectable levels in the fresh oil: mmm-TCP, mmp-TCP, ppm-TCP and ppp-TCP. The results indicate that the formulation of Mobile Jet Oil II does not contain the more toxic ortho substituted TCP isomers at concentrations above 0.0005%. The temperatures of jet engines during operation are greater than 200 °C which creates the potential to alter the composition of the original oil and create other toxic compounds. The results show there may be a significant risk from alkylated cresyl phosphates, which were identified in the used oils at concentrations calculated in the range of 0.13–0.69%. w/w. Several xylenyl and ethylphenyl phosphates have been shown to exhibit a similar toxicity to ortho substituted TCP isomers which makes there discovery in used oil significant. These compounds should be included in future aircraft air quality studies and when assessing the risks and causes of aerotoxic syndrome

Table 2: Measurements (mm) of NTM P91171-1, Baru wickeni

New records of the Oligo–Miocene mekosuchine crocodylian, Baru, from Queensland and the Northern Territory are described. Baru wickeni and Baru darrowi are accepted as valid species in the genus and their diagnoses are revised. Both species are present in Queensland and the Northern Territory but are restricted in time, with B. wickeni known from the late Oligocene and B. darrowi from the middle Miocene. The broad geographic distributions and restricted time spans of these species indicate that this genus is useful for biochronology. The record of B. wickeni from the Pwerte Marnte Marnte Local Fauna in the Northern Territory establishes that the species inhabited the north-western margin of the Lake Eyre Basin (LEB) drainage system. More southerly Oligo–Miocene sites in the LEB contain only one crocodylian species, Australosuchus clarkae. The Pwerte Marnte Marnte occurrence of B. wickeni indicates that the separation of Baru and Australosuchus did not correspond with the boundaries of drainage basins and that palaeolatitude was a more likely segregating factor

Investigating the potential for transisomerisation of trycresyl phosphate with a palladium catalyst and its implications for aircraft cabin air quality

The quality of aircraft cabin air has been an area of concern for several decades. Many investigations have linked the presence of organophosphates in air to Aerotoxic Syndrome with adverse symptoms reported by thousands of aircraft crew across the globe. Currently the source of organophosphates has been under debate, with studies pointing towards tricresylphosphates (TCP) in aircraft oil as the main source due to leaks in engine seals resulting in fumes entering the cabin. However, comparisons of oil and cabin samples have shown that the cabin samples contain a much higher proportion of ortho-substituted TCP than is commonly detected in oil. The aim of this experiment was to investigate the potential for palladium catalysts (present in aircraft air conditioning systems) to convert meta- and para-substituted TCP to produce ortho-substituted TCP through transisomerisation. This experiment was performed in a controlled laboratory setting aimed to represent the conditions likely to be experienced in aircraft. Samples were introduced to a stainless steel micro reactor tube containing the pelletized palladium catalyst using a HPLC pump with a 0.2 ml/min feed flow rate. The temperature maintained at 400 °C over a period of 1 h and samples collected using a condensing vesicle. These were then diluted and transferred to a 2 mL vial for analysis by gas chromatography mass spectrometry. No evidence supporting the transisomerisation of tricresylphosphate was obtained. This indicates that more emphasis should be placed on identifying other potential sources of ortho substituted TCP