Prospectus, April 7, 1970

ENVIRONMENTAL CRISIS AGENDA; Munton\u27s Condition \u27Good\u27; Transfer Students Do Well; Election Scheduled For Vice-President, Night Senator; Bid Too High; 700 Much Talk Without Action; Letters To The Editor; Black Rap; New Careers In American Education; Teacher Aid Students Active In Area Schools; BEAVER\u27S: It Was A Good Ordeal ; Sex & Violence; Synapse; Bull Page: Enrollment Figures, Parkland Holds Open House April 19, 1970, General Info, P.C. Board Member Named Master Farmer, Norma DeVore Memorial Award, A Matter Of Time; P.C. Participates In Library Conference, Moran Chairs Discussion Group, Calendarhttps://spark.parkland.edu/prospectus_1970/1030/thumbnail.jp

Confining Flux Tubes in a Current Algebra Approach

We describe flux tubes and their interactions in a low energy sigma model induced by $SU({N_f}) \rightarrow SO({N_f})$ flavor symmetry breaking in $SO(N_c)$ QCD. Unlike standard QCD, this model allows gauge confinement to manifest itself in the low energy theory, which has unscreened spinor color sources and global $Z_2$ flux tubes. We construct the flux tubes and show how they mediate the confinement of spinor sources. We further examine the flux tubes' quantum stability, spectrum and interactions. We find that flux tubes are Alice strings, despite ambiguities in defining parallel transport. Furthermore, twisted loops of flux tube support skyrmion number, just as gauged Alice strings form loops that support monopole charge. This model, while phenomenologically nonviable, thus affords a perspective on both the dynamics of confinement and on subtleties which arise for global Alice strings.Comment: 29 pages (REVTEX) plus 6 figures, two corrections in the final section and added reference

Testing isosource : stable isotope analysis of a tropical fishery with diverse organic matter sources

Author Posting. © Ecological Society of America, 2006. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Ecology 87 (2006): 326–333, doi:10.1890/05-0721.We sampled consumers and organic matter sources (mangrove litter, freshwater swamp-forest litter, seagrasses, seagrass epiphytes, and marine particulate organic matter [MPOM]) from four estuaries on Kosrae, Federated States of Micronesia for stable isotope (δ13C and δ34S) analysis. Unique mixing solutions cannot be calculated in a dual-isotope, five-endmember scenario, so we tested IsoSource, a recently developed statistical procedure that calculates ranges in source contributions (i.e., minimum and maximum possible). Relatively high minimum contributions indicate significant sources, while low maxima indicate otherwise. Litter from the two forest types was isotopically distinguishable but had low average minimum contributions (0–8% for mangrove litter and 0% for swamp-forest litter among estuaries). Minimum contribution of MPOM was also low, averaging 0–13% among estuaries. Instead, local marine sources dominated contributions to consumers. Minimum contributions of seagrasses averaged 8–47% among estuaries (range 0–88% among species). Minimum contributions of seagrass epiphytes averaged 5–27% among estuaries (range 0–69% among species). IsoSource enabled inclusion of five organic matter sources in our dual-isotope analysis, ranking trophic importance as follows: seagrasses > seagrass epiphytes > MPOM > mangrove forest > freshwater swamp-forest. IsoSource is thus a useful step toward understanding which of multiple organic matter sources support food webs; more detailed work is necessary to identify unique solutions.This research was funded through a research joint venture agreement between the USDA and CMP at the University of Georgia

Prospectus, February 23, 1970

P.C. STUDENTS FORM CLUB TO BATTLE POLLUTION; Getting Involved ; Future Interviews On Board; Polution and War; Letters To The Editor; In-Sight Out; Black Rap; Trus To Speak To Ioata; Advisor In Accident; Grading Committee Proposals; Nurse\u27s Club Meeting; Council For Interracial Projects; Midwinter Festival Stomping Success; Synapse: Z ; Zero Weekend: Genesis, Bloomsberry People; Bull Page: Calendar, Flow Chart, P. Curtis Says, Help Is Needed, Larson\u27s Writing Clinic, LRC Takes To Flower Power, Contest Winners, G. I. Benefits, Nelson Elected President; Spring Dance Planning; Sports Parkland: Cobras Drop 88-87 Verdict, Wabash First Tourney Foe, Pont For Press, A Man For All Seasonshttps://spark.parkland.edu/prospectus_1970/1031/thumbnail.jp

Prospectus, January 27, 1970

NCA VISIT IS FAVORABLE; Student Gov\u27t Demands Action; Larry Bell Wins Alcoa Award; Election Results, Pay Vote Favorable; Black Rap; These Three Kings; Letters To The Editor; Student Code Now Official; Ski Club Plans Weekend; Parkland College Faculty Appointment; DeVore Memorial Service Held; From Who\u27s Point of View; James Lauds Students; Black Week At Parkland College; Black Panther Goals; Panthers To Protect Black Community; Outbrust Spark Panel Discussion; Bull Page: Advisor System, Calendar, Nixon Football and Politics, Illinois Grant Program, Writing Clinic, WANTED Yearbook Title, The Spieler, The Killer Was Pollution, Student Loans, Circle K Sponsors Dance; Synapse: Gold, Jacks, Rock & Roll Is Alive or Dead, The Bag, Four Days & A Night; !!! A Rock Opera; Bucks Lead in I.M.; Cobras Drop 3 in Texas; Cobras Trim Joliet, 92-88; A man for all seasons: Scholarships at Parkland?; Illini Frosh Trim Cobras 80-68; Vets Say Need Is Great; New Campus Developmentshttps://spark.parkland.edu/prospectus_1970/1033/thumbnail.jp

Charge Violation and Alice Behavior in Global and Textured Strings

Spontaneous breaking of global symmetries can produce ``Alice'' strings: line defects which make unbroken symmetries multivalued, induce apparent charge violation via Aharonov-Bohm interactions, and form point defects when twisted into loops. We demonstrate this behavior for both divergent and textured global Alice strings. Both adiabatically scatter charged particles via effective Wilson lines. For textured Alice strings, such Wilson lines occur at all radii, and are multivalued only inside the string. This produces measurable effects, including path-dependent charge violation.Comment: 32 pages, 2 epsfigs, Revte

LOW-DOSE GAMMA-RADIATION INHIBITS BENZO[A]PYRENE-INDUCED LUNG ADENOMA DEVELOPMENT IN A/J MICE

Low-dose ionizing radiation (LDR) may lead to suppression of smoking-related lung cancer. We examined the effects of a known cigarette smoke carcinogen Benzo[a]pyrene (B[a]P) alone or in combination with fractionated low-dose gamma radiation (60 – 600 mGy total dose) on the induction of lung neoplasms in the A/J mouse. Our results show that 600 mGy of gamma radiation delivered in six biweekly fractions of 100 mGy starting 1 month after B[a]P injection significantly inhibits the development of lung adenomas per animal induced by B[a]P. Our data also indicated that the six biweekly doses suppressed the occurrence of spontaneous hyperplastic foci in the lung, although this suppression failed to reach statistical significance when analyzed as average foci per lung possibly related to the small sample sizes used for the control and test groups

Topologically Alice Strings and Monopoles

Symmetry breaking can produce ``Alice'' strings, which alter scattered charges and carry monopole number and charge when twisted into loops. Alice behavior arises algebraically, when strings obstruct unbroken symmetries -- a fragile criterion. We give a topological criterion, compelling Alice behavior or deforming it away. Our criterion, that \pi_o(H) acts nontrivially on \pi_1(H), links topologically Alice strings to topological monopoles. We twist topologically Alice loops to form monopoles. We show that Alice strings of condensed matter systems (nematic liquid crystals, helium 3A, and related non-chiral Bose condensates and amorphous chiral superconductors) are topologically Alice, and support fundamental monopole charge when twisted into loops. Thus they might be observed indirectly, not as strings, but as loop-like point defects. We describe other models, showing Alice strings failing our topological criterion; and twisted Alice loops supporting deposited, but not fundamental, monopole number.Comment: 2 figures; this paper consolidates preprints hep-th/0304161 and hep-th/0304162, to appear in Phys. Rev.

Outcomes after hip or knee replacement surgery for osteoarthritis: A prospective cohort study comparing patients quality of life before and after surgery with age-related population norms

Objective: To compare the health-related quality of life of people with osteoarthritis before and after primary total hip and knee replacement surgery with that of the general Australian population. Design: A prospective cohort study. Setting: Three Sydney hospitals, public and private. Participants: Patients with osteoarthritis undergoing primary total hip (n = 59) and knee (n = 92) joint replacement surgery. Main outcome measure: Medical Outcomes Study Short Form (SF-36) scores before and 12 months after joint replacement surgery (compared with population norms). Results: Patients in each age group showed a significant improvement in health-related quality of life after joint replacement surgery in most scales of the SF-36, particularly physical function, role physical and bodily pain. SF-36 scores for the 42 hip-replacement patients aged 55-74 years improved to equal or exceed the population norm on all scales. SF-36 scores of the 52 knee replacement patients aged 55-74 years improved, but physical function and bodily pain scores remained significantly worse than the population norm. SF-36 scores for both hip (n = 17) and knee (n= 40) replacement patients aged 75 years and over improved significantly, becoming similar to population norms for this age group. Conclusions: Total hip or knee replacement for osteoarthritis significantly improves patient health and well-being at 12 months after surgery. Age alone should not be a barrier to surgery