The Canadian Society for Bioengineering La Société Canadienne de Génie Agroalimentaire et de Bioingénierie MEASUREMENT OF THERMAL CONDUCTIVITY OF PROCESSED FLOURS Written for presentation at the CSBE/SCGAB 2013 Annual Conference

ABSTRACT Thermal conductivity of five varieties of processed flours was measured using the non-steady state method. The result indicated that thermal conductivity of 0.06 ±0.00 W/(m 0 C) was obtained for the unconditioned groat ground flour (UCF) with largest moisture content, while the lowest thermal conductivity of 0.026 ±0.0016 W/(m 0 C) was obtained for the fined ground oat flour (FGOF) with lowest moisture content. And also, the results showed that bulk density has a significant effect on thermal conductivity for the low bran oat flour (LBOF). Increasing the bulk density from 484 to 607 kg/m 3 caused an increased in the thermal conductivity from 0.048 ±0.07 to 0.104 ±0.003 W/(m 0 C)

Odour and greenhouse gas emission from swine farrowing operations

Abstract Odour and greenhouse gas (GHG) emissions were measured on two 3000-sow swine farrowing farms, one with open earthen manure storage (EMS) and other one with negative pressure covered (NPC) EMS. Air samples were taken in Tedlar bags with a vacuum chamber from exhaust fans of barns and the NPC EMS. A flux hood was used to collect air samples from the manure surface in the open EMS. Collected samples were analyzed for odour concentrations with a dynamic dilution olfactometer and for GHG concentrations with gas chromatography. The average odour emission rate of the two farms was 316 OU/s-AU (AU -animal unit) from farrowing rooms and 113 OU/s-AU from gestation rooms. Odour emission from the NPC EMS was negligible in comparison with the open EMS. The total odour emission from the farm with NCP EMS was 54% of that from farm with open EMS. The CO 2 emission rates from building exhaust ranged from 4.8 to 16.6 kg/day-AU and the rate from farrowing rooms was significantly higher than that from gestation rooms. The CH 4 emission rates from building exhaust ranged from 73 to 351 g/day-AU. Both CO 2 and CH 4 emissions from the secondary cell of the NPC EMS were negligible in comparison with the primary cell or with the open EMS. The CO 2 emission rate from the primary cell of the NPC EMS was significantly lower than that from the open EMS. Although the average CH 4 concentration in the primary cell of the NPC EMS was160 times higher than that in the open EMS, the total CH 4 emission from the NCP EMS was only 26% of that from the open EMS

Perturbation of symmetric Markov processes

We present a path-space integral representation of the semigroup associated with the quadratic form obtained by a lower order perturbation of the L2-infinitesimal generator L of a general sym-, where D is a metric Markov process. An illuminating concrete example for L is ∆D − (−∆) s D bounded Euclidean domain in Rd, s ∈]0, 1[, ∆D is the Laplacian operator in D with zero Dirichlet boundary condition and −(−∆) s D is the fractional Laplacian operator in D with zero exterior condition. The strong Markov process corresponding to L is a Lévy process that is the sum of Brownian motion in R d and an independent symmetric (2s)-stable process in R d killed upon exiting domain D. This probabilistic representation is a combination of Feynman-Kac and Girsanov formulas. Crucial to the development is to use the extension of Nakao’s stochastic integral for zero-energy additive functionals and the associated Itô formula, both of which were recently developed in [3]

MMP13 Mutations are the Cause of Recessive Metaphyseal Dysplasia, Spahr Type

Metaphyseal dysplasia, Spahr type (MDST; OMIM 250400) was described in 1961 based on the observation of four children in one family who had rickets-like metaphyseal changes but normal blood chemistry and moderate short stature. Its molecular basis and nosologic status remained unknown. We followed up on those individuals and diagnosed the disorder in an additional member of the family. We used exome sequencing to ascertain the underlying mutation and explored its consequences on threedimensional models of the affected protein. The MDST phenotype is associated with moderate short stature and knee pain in adults, while extra-skeletal complications are not observed. The sequencing showed that MDST segregated with a c.619T>G single nucleotide transversion in MMP13. The predicted nonconservative amino acid substitution, p.Trp207Gly, disrupts a crucial hydrogen bond in the calcium-binding region of the catalytic domain of the matrix metalloproteinase, MMP13. The MDST phenotype is associated with recessive MMP13 mutations, confirming the importance of this metalloproteinase in the metaphyseal growth plate. Dominant MMP13 mutations have been associated with metaphyseal anadysplasia (OMIM 602111), while a single child homozygous for a MMP13 mutation had been previously diagnosed as "recessive metaphyseal anadysplasia," that we conclude is the same nosologic entity as MDST. Molecular confirmation of MDST allows distinction of it from dominant conditions (e.g., metaphyseal dysplasia, Schmid type; OMIM # 156500) and from more severe multi-system conditions (such as cartilage-hair hypoplasia; OMIM # 250250) and to give precise recurrence risks and prognosis