Wood Products and Carbon Storage: Can Increased Production Help Solve the Climate Crisis?

This report draws on a variety of sources to illuminate the greenhouse gas impacts of wood products and wood biomass fuels throughout their life-cycles. While detailed analyses are rare, the picture is complete enough to show the variability of the processing path followed by different types of trees in various parts of the country. Taking the entire life-cycle of these products into account, it becomes clear that an increased use of wood fuels and lumber will have very little net effect on climate change. To the contrary, the impact is as likely to be negative as positive.The report also takes a closer look at the use of forest-carbon offsets in voluntary or regulatory programs. Because such offsets are expected to balance emissions from other sources, it is important that the additional carbon sequestration be real. This document outlines several criteria for carbon offset standards to account for the full effects of harvested wood carbon

The metabolic enzyme CTP synthase forms cytoskeletal filaments

Filament-forming cytoskeletal proteins are essential for the structure and organization of all cells. Bacterial homologues of the major eukaryotic cytoskeletal families have now been discovered, but studies suggest that yet more remain to be identified. We demonstrate that the metabolic enzyme CTP synthase (CtpS) forms filaments in Caulobacter crescentus. CtpS is bifunctional, as the filaments it forms regulate the curvature of C. crescentus cells independently of its catalytic function. The morphogenic role of CtpS requires its functional interaction with the intermediate filament, crescentin (CreS). Interestingly, the Escherichia coli CtpS homologue also forms filaments both in vivo and in vitro, suggesting that CtpS polymerization may be widely conserved. E. coli CtpS can replace the enzymatic and morphogenic functions of C. crescentus CtpS, indicating that C. crescentus has adapted a conserved filament-forming protein for a secondary role. These results implicate CtpS as a novel bifunctional member of the bacterial cytoskeleton and suggest that localization and polymerization may be important properties of metabolic enzymes

Chinaman Go Home!: A Socioeconomic and Gendered Examination of the Anti-Chinese Movements of Portland, Oregon and San Francisco, California

This thesis examines the Anti-Chinese Movement in Portland, Oregon in relation to that of San Francisco. Contemporary sources indicated a correlation between labor and racism. This correlation is explored in both San Francisco and Portland along with contemporary notions of gender identity in an effort to examine the Anti-Chinese movement using modern social historic theory

The Australian Orthopaedic Association National Joint Replacement Registry

The document attached has been archived with permission from the editor of the Medical Journal of Australia. An external link to the publisher’s copy is included.In the financial year ending June 2002, 26 689 hip replacements and 26089 knee replacements (total, 52778) were performed in Australia. Hip and knee replacement procedures have increased between 5%-10% each year for the past 10 years, with a combined increase in hip and knee replacement of 13.4% in the past year. The revision rate for hip replacement surgery in Australia is unknown but is estimated to be 20%-24%; the revision rate for hip replacement surgery in Sweden is 7%. Although data collection for the Registry is voluntary, it has 100% compliance from hospitals undertaking joint-replacement surgery.Stephen E Graves, David Davidson, Lisa Ingerson, Philip Ryan, Elizabeth C Griffith, Brian F J McDermott, Heather J McElroy and Nicole L Prat

The glycolytic enzyme phosphofructokinase-1 assembles into filaments.

Despite abundant knowledge of the regulation and biochemistry of glycolytic enzymes, we have limited understanding on how they are spatially organized in the cell. Emerging evidence indicates that nonglycolytic metabolic enzymes regulating diverse pathways can assemble into polymers. We now show tetramer- and substrate-dependent filament assembly by phosphofructokinase-1 (PFK1), which is considered the "gatekeeper" of glycolysis because it catalyzes the step committing glucose to breakdown. Recombinant liver PFK1 (PFKL) isoform, but not platelet PFK1 (PFKP) or muscle PFK1 (PFKM) isoforms, assembles into filaments. Negative-stain electron micrographs reveal that filaments are apolar and made of stacked tetramers oriented with exposed catalytic sites positioned along the edge of the polymer. Electron micrographs and biochemical data with a PFKL/PFKP chimera indicate that the PFKL regulatory domain mediates filament assembly. Quantified live-cell imaging shows dynamic properties of localized PFKL puncta that are enriched at the plasma membrane. These findings reveal a new behavior of a key glycolytic enzyme with insights on spatial organization and isoform-specific glucose metabolism in cells

The possibility of absolute calibration of analog detectors by using parametric down-conversion: a systematical study

Accurate calibration of photodetectors both in analog and in photon-counting regime is fundamental for various scientific applications, which range from "traditional" quantum optics to the studies on foundations of quantum mechanics, quantum cryptography, quantum computation, etc. In this paper we systematically study the possibility of the absolute calibration of analog photo-detectors based on the properties of parametric amplifiers. Our results show that such a method can be effectively developed with interesting possible metrological applications

Building Empathy Through Outdoor Education

This presentation illustrates the rationale applied in developing the PEMI Youth Center Squam Lake Science Program Feedback Survey (PYCSP Feedback Survey). Existing literature was juxtaposed against the Science Program’s curriculum to produce a research-backed tool. The PYCSP Feedback Survey consists of an individual or parent form. The assessment consists of 18 items, soliciting feedback and measuring program efficacy. In accordance with best practices derived from literature, its administration to all PYC participants is intended to bookend school semesters. Based off what existing literature suggests, we predict the PYCSP Feedback Survey will effectively measure the efficacy of the PYC Science Program

The Middle Ordovician section in east central Missouri

One of the most serious difficulties confronting anyone working on stratigraphic problems in the Ozark area is the lack of detailed faunal lists of the various formations. A great deal of general work has been done, but very few detailed faunal studies have ever been published, and correlation of the Missouri section with sections in adjoining states is often difficult. In a recent paper, Dake has discussed the origin and correlation of the St. Peter sandstone. In this study he found considerable difficulty in correlating the various formations above the St. Peter, and at his suggestion, the present study was undertaken in the hope that additional data regarding the fauna and correlation of these forms would be obtained. The area studied is located in the western part of St. Louis County... The writing of this report was divided as follows: The Introduction was written by the senior author. The junior author has written the description of the sections, has identified the collections and compiled the faunal lists. The identification of the fossils was done under the supervision of the senior author, and he assumes all responsibility for the correctness of these identifications. The junior author is also to be credited with the drafting of the various columnar sections. The sections dealing with correlation and conclusions are the work of both authors --Introduction, pages 1-3