Acidic Precipitation in South-Central Ontario: Recent Observations

1978 ◽  
Vol 35 (6) ◽  
pp. 809-815 ◽  
Author(s):  
P. J. Dillon ◽  
D. S. Jeffries ◽  
W. Snyder ◽  
R. Reid ◽  
N. D. Yan ◽  
...  

Precipitation in south-central Ontario, with mean pH between 3.95 and 4.38 and frequent event pH's of < 4.0, is more acidic than that in the Sudbury, Ontario, region and in Scandinavia, and as acidic as that in the northeastern USA. As in New England, a major component of the total acidity is strong mineral acid. Because most lakes in south-central Ontario have very low buffering capacities (10–200 μeq∙L−1), high acid loadings are likely to lead to acidification of many lakes and streams in the forseeable future. Although it is not yet possible to estimate the time required for this to happen, there is already some evidence of declining buffering capacity in a few lakes. Key words: acidic rain, buffering capacity, acidic lakes, precipitation, alkalinity


Pathogens ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 354
Author(s):  
Lynn M. Osikowicz ◽  
Kalanthe Horiuchi ◽  
Irina Goodrich ◽  
Edward B. Breitschwerdt ◽  
Bruno Chomel ◽  
...  

Cat-associated Bartonella species, which include B. henselae, B. koehlerae, and B. clarridgeiae, can cause mild to severe illness in humans. In the present study, we evaluated 1362 serum samples obtained from domestic cats across the U.S. for seroreactivity against three species and two strain types of Bartonella associated with cats (B. henselae type 1, B. henselae type 2, B. koehlerae, and B. clarridgeiae) using an indirect immunofluorescent assay (IFA). Overall, the seroprevalence at the cutoff titer level of ≥1:64 was 23.1%. Seroreactivity was 11.1% and 3.7% at the titer level cutoff of ≥1:128 and at the cutoff of ≥1:256, respectively. The highest observation of seroreactivity occurred in the East South-Central, South Atlantic, West North-Central, and West South-Central regions. The lowest seroreactivity was detected in the East North-Central, Middle Atlantic, Mountain, New England, and Pacific regions. We observed reactivity against all four Bartonella spp. antigens in samples from eight out of the nine U.S. geographic regions.



PEDIATRICS ◽  
1949 ◽  
Vol 3 (6) ◽  
pp. 865-865

A "Measles Year" ACCORDING to the reports of the U.S. Public Health Service, this is a measles year. For example, a total of 15,266 cases were reported for the week of January 29, 1949, compared to a five year median of 6,712. Increases were reported in all geographic divisions except New England and the West North Central area. The largest increases were in the East South Central and South Atlantic areas. Of the total that week, an aggregate of 10,522 cases occurred in the following 12 states: Massachusetts, New York, Pennsylvania, Michigan, Wisconsin, Maryland, Virginia, Kentucky, Alabama, Texas, Oregon, and California. In contrast to measles, the influenza incidence picture shows an unusually low number of cases. For example, in the week of January 29, 1949, a total of 4,534 cases was reported, compared to a five year median of 14,253. List of Publications Under date of March 1948 the Children's Bureau has published a list of its publications. The list includes all publications of the Children's Bureau issued since 1945 that are available for general distribution; earlier publications of the Bureau that are still available and of current value; some reprints of material published elsewhere but reproduced by or for the Bureau. Pediatricians will find some of these reprints of particular interest. Single copies of the list and of most of the publications can be obtained free from the Children's Bureau, Washington 25, D.C.



PEDIATRICS ◽  
1948 ◽  
Vol 2 (1) ◽  
pp. 138-140

THE accompanying table summarizes the incidence of nine important communicable diseases, based on weekly telegraphic reports from State health departments. The reports from each State for each week are published in PUBLIC HEALTH REPORTS under the section "Incidence of Disease." [See Table in Source Pdf]. Diseases Above Median Incidence Measles—The number of cases of measles rose from 102,680 during the preceding 4 weeks to 114,983 during the 4 weeks ended May 22. The incidence was 3.4 times the number of cases reported for the corresponding period in 1947, which was, however, a comparatively low measles year, but it was only about 10 percent above the 1943-47 median. In the New England and East South Central sections the incidence was below the normal expectancy and in the South Atlantic section the number of cases was only slightly higher than the median for the preceding 5 years, but in the other 6 sections the increases over the median expectancy ranged from 1.1 times the median in the West North Central section to 3.4 times the median in the West South Central section. Poliomyelitis.— The number of cases of poliomyelitis rose from 126 during the preceding 4-week period to 440 during the current 4 weeks. The incidence was 3.5 times that reported for these weeks in 1947, which number (126 cases) also represents the 1943-47 median. An increase of this disease is expected at this season of the year, but the current number of cases represents a larger increase at this time than has normally occurred in preceding years. While each section of the country except New England contributed to the relatively high incidence, the greatest excesses over the 5-year medians were reported from the West North Central and West South Central sections. Of the total cases Texas reported 179, California 62, South Carolina 46, New Jersey 16, Iowa 14, Florida 12, Alabama 11, and Illinois, South Dakota, and Louisiana 10 each; 85 percent of the reported cases occurred in those 10 states which represent every section of the country except the New England and Mountain sections. Since the beginning of the year there have been 947 cases of poliomyelitis reported as compared with 894 and 810 for the corresponding period in 1947 and 1946, respectively.



Neurosurgery ◽  
2020 ◽  
Author(s):  
Mustafa Motiwala ◽  
Michael J Herr ◽  
Sripraharsha S Jampana Raju ◽  
Jock Lillard ◽  
Sonia Ajmera ◽  
...  

Abstract BACKGROUND Established by the Centers for Medicare and Medicaid Services (CMS), the Open Payments Database (OPD) has reported industry payments to physicians since August 2013. OBJECTIVE To evaluate the frequency, type, and value of payments received by academic neurosurgeons in the United States over a 5-yr period (2014-2018). METHODS The OPD was queried for attending neurosurgeons from all neurosurgical training programs in the United States (n = 116). Information from the OPD was analyzed for the entire cohort as well as for comparative subgroup analyses, such as career stage, subspecialty, and geographic location. RESULTS Of all identified neurosurgeons, 1509 (95.0%) received some payment from industry between 2014 and 2018 for a total of 106 171 payments totaling $266 407 458.33. A bimodal distribution was observed for payment number and total value: 0 to 9 (n = 438) vs &gt; 50 (n = 563) and 0-$1000 (n = 418) vs &gt;$10 000 (n = 653), respectively. Royalty/License was the most common type of payment overall (59.6%; $158 723 550.57). The median number (40) and value ($8958.95) of payments were highest for mid-career surgeons. The South-Central region received the most money ($117 970 036.39) while New England received the greatest number of payments (29 423). Spine surgeons had the greatest median number (60) and dollar value ($20 551.27) of payments, while pediatric neurosurgeons received the least (8; $1108.29). Male neurosurgeons received a greater number (31) and value ($6395.80) of payments than their female counterparts (11, $1643.72). CONCLUSION From 2014 to 2018, payments to academic neurosurgeons have increased in number and value. Dollars received were dependent on geography, career stage, subspecialty and gender.



1984 ◽  
Vol 62 (10) ◽  
pp. 1940-1944 ◽  
Author(s):  
Niels Jacobsen ◽  
Hans Kolind-Andersen ◽  
Jens Christensen

3-Isoxazolols can be made in good yields from β-ketoesters or diketene and hydroxylamine, provided that pH is kept at about 10 throughout the reaction, and that the reaction mixture is quenched with an excess of strong mineral acid. This suppresses the formation of 5-isoxazolones, which are otherwise normally the main products of the reaction.





2007 ◽  
Vol 307 (1) ◽  
pp. 63-118 ◽  
Author(s):  
John N. Aleinikoff ◽  
Robert P. Wintsch ◽  
Richard P. Tollo ◽  
Daniel M. Unruh ◽  
C. Mark Fanning ◽  
...  


2020 ◽  
Author(s):  
Ivan Koychev ◽  
Simon Young ◽  
Heather Holve ◽  
Michael Ben Yehuda ◽  
John Gallacher

AbstractIntroductionEfforts to de-risk neurodegenerative research have been hampered by the expense and time required to gather the rich longitudinal data needed for stratified experimental study recruitment. Dementias Platform UK (DPUK) is a public-private partnership that brings together data from over 40 cohorts in a standardised framework, which represents an until now unavailable opportunity to create such a resource through a streamlined brain health re-contact platform based on existing cohorts, as well as prospectively collected data.Methods and analysisThe DPUK re-contact platform consists of an opt-in (Great Minds, GM) and an opt-out component (Clinical Studies register, CSR). GM requires invited DPUK cohort participants to consent to targeted re-contact at the GM website. Participants complete prospective browser- and smartphone-based cognitive tests and are given the option for remote genetic and actigraphy testing. The GM data is linked to the retrospective DPUK cohort dataset, including genotypic and longitudinal phenotypic data. The CSR is a solution for cohorts explicitly allowing targeted re-contact. Approved studies provide pre-screening criteria on the basis of the CSR/GM dataset, and individuals meeting these criteria are offered participation directly (GM) or through the parent DPUK cohort (CSR).Ethics and disseminationThe database was approved by the South Central - Oxford C Research Ethics Committee, reference 18/SC/0268 on the 27th of June 2018 and amended on the 1st of November 2019. The availability of the Register to researchers will be disseminated through DPUK’s official communication channels as well as national and international scientific meetings.Article SummaryStrengths and limitations of this study-Solution for stratified recruitment into brain health studies on the basis of genetics and cross-cohort retrospective phenotypic data-Prospective standardised data collection: medical history, cognition, actigraphy-Explicit consent for re-contact on the basis of perceived dementia risk-Recruitment on the basis of retrospective data limited by data variance between cohorts-Limited scope for recruitment of symptomatic individuals due to need to register interest for research and respond to study offers through digital technology





Oecologia ◽  
1983 ◽  
Vol 59 (2-3) ◽  
pp. 216-223 ◽  
Author(s):  
C. S. Cronan ◽  
W. A. Reiners


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