Effects of Channelization on Fish Populations of the Cache River and Bayou DeView

This study was designed to better understand the possible effects of channelization by comparing natural and previously channelized sections of the Cache River and Bayou DeView. Forty-five fish species were collected in natural reaches, but only 24 species were collected in channelized reaches. Cyprinus carpio and Dorosoma cepedianum constituted 40 and 20 percent of the total fish biomass in channelized reaches, respectively, but only 22 and 2 percent of the total biomass in natural reaches. The mean weight of total fishes and game fishes only per surface ha in natural sections were 276 and 46 kg, respectively, but these values in channelized sections were only 88 and 2 kg, respectively. Mean species diversity indices for natural and channelized sections of the Cache River were 3.1 and 1.8, respectively, and mean redundancy values for these sections were .30 and .55, respectively. Species diversity indices and redundancy values for Bayou DeView followed this trend

Durée d’évolution de l’épilepsie et évolution des crises après chirurgie

Rationale: To determine the effect of epilepsy duration on seizure-freedom following resective epilepsy surgery. Methods: A retrospective review of database information for patients treated with resective surgery between August of 1991 and 2001 in Milwaukee. General demographic information was reviewed including gender, age of seizure onset, age at time of surgery, epilepsy syndrome, and medications. Evaluative information including radiographic, neurophysiological, and neuropsychological data was included in this database. Outcome data at 6 months was compared for groups seizure-free or not with respect to the duration of their epilepsy prior their surgery. Pearson s chi- squared statistical analysis was used. Results: We found complete data on 188 of 280 resections completed in Milwaukee from 1991 to 2001. Duration of epilepsy was 1-50 years (Mean=20). Temporal lobe resections were most frequent (150) followed by frontal resections (23) and then miscellaneous procedures (15). Patients were divided into two groups, seizure-free and not seizure-free at 6 months. Statistical analyses showed no relationship between duration of epilepsy and postoperative seizure status for the entire group or for the temporal lobe resection patients. Comparisons for the smaller surgical groups showed no trends but analyses were limited by small sample size. Conclusions: Seizure-freedom following epilepsy surgery is not influenced by epilepsy duration in our study. This finding supports use of epilepsy surgery independent of epilepsy duration.Justification: Pour déterminer l’effet de la durée d’évolution de l’épilepsie sur la disparition des crises épileptiques à la suite chirurgie réglée de l’épilepsie. Méthodes: Une étude rétrospective de la base de données pour les patients traités par chirurgie exérèse entre août 1991 et 2001 à Milwaukee. Des informations démographiques générales ont été examinées, y compris le sexe, l’âge de début des crises, l’âge au moment de la chirurgie, le syndrome de l’épilepsie et les médicaments. L’analyse de l’information sur l’évaluation, y compris les données radiographiques, neurophysiologique, neuropsychologique et a été inclus dans cette base de données. Données sur l’évolution à 6 mois a été comparé à des groupes sans survenue de crises ou non par rapport à la durée de leur épilepsie avant leur chirurgie. Les tests statistiques Pearson et chi-2 furent utilisés. Résultats: Nous avons trouvé des données complètes chez 188 de 280 résections terminé à Milwaukee de 1991 à 2001. Durée de l’épilepsie était 1-50 ans (moyenne = 20). Résections du lobe temporal sont les plus fréquentes (150) suivie par une résection frontale (23) et ensuite les procédures diverses (15). Les patients ont été divisés en deux groupes, ceux avec crises persistantes et ceux sans crises à 6 mois. Les analyses statistiques n’ont montré aucune relation entre la durée de l’épilepsie et le statut de saisie post-opératoire pour l’ensemble du groupe ou pour les patients résection du lobe temporal. Comparaisons pour les petits groupes chirurgicaux n’ont montré aucune tendance, mais les analyses ont été limitées par la taille réduite de l’échantillon. Conclusions: la disparition totale des crises après chirurgie de l’épilepsie n’est pas influencée par la durée d’évolution d’épilepsie dans notre étude. Cette constatation appuie l’utilisation de la chirurgie de l’épilepsie indépendante de la durée d’épilepsie

Business and Higher Education

This booklet prints the Founders\u27 Day address delivered by Morris L. Clothier at Ursinus College on February 20, 1923.https://digitalcommons.ursinus.edu/founders_programs/1065/thumbnail.jp

Neighborhood Condition Prevalence Rates Correlate With COVID-19 Mortality in Milwaukee County, Wisconsin

Purpose: We sought to determine if census tract-level (ie, neighborhood) COVID-19 death rates in Milwaukee County correlated with the census tract-level condition prevalence rates (CPRs) for individual COVID-19 mortality risk. Methods: This study used Milwaukee County-reported COVID-19 death rates per 100,000 lives for the 296 census tracts within the county to perform a linear regression with individual COVID-19 mortality risk CPR, mean age, racial composition of census tract (by percentage of non-White residents), and poverty (by percentage within census tract), followed by multiple regression with all 7 CPRs as well as the 7 CPRs combined with the additional demographic variables. CPR estimates were accessed from the Centers for Disease Control and Prevention 500 Cities Project. Demographics were accessed from the U.S. Census. The Milwaukee County Medical Examiner’s office identified 898 deaths from COVID-19 in Milwaukee County from March 2020 to June 2021. Results: Among the variables included, crude death rate demonstrated a statistically significant association with the 7 COVID-19 mortality risk CPRs (as analyzed collectively), census tract mean age, and several of the CPRs individually. The addition of census tract age, race, and poverty in multiple regression did not improve the association of the 7 CPRs with crude death rate. Conclusions: Results from this population-level study indicated that census tracts with high COVID-19 mortality correlated with high-risk condition prevalence estimates within those census tracts, illustrating how health data collection and analysis at a census tract level could be helpful when planning pandemic-mitigating public health efforts

A new method for imaging nuclear threats using cosmic ray muons

Muon tomography is a technique that uses cosmic ray muons to generate three dimensional images of volumes using information contained in the Coulomb scattering of the muons. Advantages of this technique are the ability of cosmic rays to penetrate significant overburden and the absence of any additional dose delivered to subjects under study above the natural cosmic ray flux. Disadvantages include the relatively long exposure times and poor position resolution and complex algorithms needed for reconstruction. Here we demonstrate a new method for obtaining improved position resolution and statistical precision for objects with spherical symmetry

Are Small Reimbursement Changes Enough to Change Cancer Care? Reimbursement Variation in Prostate Cancer Treatment

The Centers for Medicare and Medicaid Services recently initiated small reimbursement adjustments to improve the value of care delivered under fee-for-service. To estimate the degree to which reimbursement influences physician decision making, we examined utilization of gonadotropin-releasing hormone (GnRH) agonists among urologists as Part B drug reimbursement varied in a fee-for-service environment

Pion-nucleus elastic scattering on 12C, 40Ca, 90Zr, and 208Pb at 400 and 500 MeV

Pion-nucleus elastic scattering at energies above the Delta(1232) resonance is studied using both pi+ and pi- beams on 12C, 40Ca, 90Zr, and 208Pb. The present data provide an opportunity to study the interaction of pions with nuclei at energies where second-order corrections to impulse approximation calculations should be small. The results are compared with other data sets at similar energies, and with four different first-order impulse approximation calculations. Significant disagreement exists between the calculations and the data from this experiment

First Science Observations with SOFIA/FORCAST: Properties of Intermediate-Luminosity Protostars and Circumstellar Disks in OMC-2

We examine eight young stellar objects in the OMC-2 star forming region based on observations from the SOFIA/FORCAST early science phase, the Spitzer Space Telescope, the Herschel Space Observatory, 2MASS, APEX, and other results in the literature. We show the spectral energy distributions of these objects from near-infrared to millimeter wavelengths, and compare the SEDs with those of sheet collapse models of protostars and circumstellar disks. Four of the objects can be modelled as protostars with infalling envelopes, two as young stars surrounded by disks, and the remaining two objects have double-peaked SEDs. We model the double-peaked sources as binaries containing a young star with a disk and a protostar. The six most luminous sources are found in a dense group within a 0.15 x 0.25 pc region; these sources have luminosities ranging from 300 L_sun to 20 L_sun. The most embedded source (OMC-2 FIR 4) can be fit by a class 0 protostar model having a luminosity of ~50 L_sun and mass infall rate of ~10^-4 solar masses per year.Comment: Accepted by ApJ Letter